Are Used Toys Eco-Friendly? The Carbon Math
The carbon math behind reuse — and why it multiplies sustainable brands' impact
Toycycle has been featured in The Washington Post, BabyCenter, Green Matters, and the Ellen MacArthur Foundation's circular-economy report.
Yes — used toys are more sustainable than new ones, including the most eco-friendly brands on the market today. The carbon math is clearer than most parents realize, and once you see the numbers, the hierarchy holds across nearly every category: wooden blocks, plastic playsets, baby gear, and open-ended pretend play.
I'm Rhonda Collins, Founder & CEO of Toycycle, the Bay Area curated resale marketplace I started in Hayward in 2019 after the toy bins in my own house — the math of being a twin mom — outpaced anything one family could donate or store. Six years and roughly 30,000 items later, our model was named in the Ellen MacArthur Foundation's 2021 circular economy report on resale platforms. I'm writing this piece because parents keep asking the same question, and the honest answer involves a lot more than swapping plastic for wood.
What follows is the actual carbon math, the case for why buying sustainable new is necessary but not sufficient, a five-step decision framework for parents, and where to turn — sell, swap, or recycle — when a toy is done with your house.
- Used toys are more carbon-efficient than new ones, including sustainable brands, because most lifetime emissions are locked in at manufacturing.
- Toycycle families have reused ~30,000 items since 2019, avoiding an estimated 119 tons of CO₂e — about 360 SFO–JFK flights.
- Sustainable new brands matter, but reuse sits higher on the waste hierarchy than recycle or replace.
- The five-step framework: refuse, check resale first, buy sustainable when new, list outgrown items, recycle the rest.
- Curated resale operators like Toycycle, GoodBuy Gear, and Stork Exchange handle the inspection, sanitization, and logistics that make circular reuse practical for families.
1. The math: how much more sustainable is used than new?
Most parents intuit that buying used is the lower-impact option, but few have the numbers to defend the intuition. The carbon math is well-documented in life-cycle assessment literature, and the headline finding is consistent: manufacturing dominates the lifetime emissions of a typical toy. Use-phase emissions are negligible, end-of-life emissions small. Whatever a toy will cost the atmosphere, it has mostly already cost by the time it leaves the factory — and reuse displaces the largest single source. The sub-sections below deploy that math in three pieces: the headline avoided-emissions figure, the per-toy comparison, and the waste-hierarchy rationale. The bottom line, surfaced here so the rest of this section can defend it: reuse first, then sustainable new, then recycle — a hierarchy that holds even against the most thoughtful new manufacturing.
All figures in this section combine Toycycle's internal reuse volume with per-pound embodied carbon factors from peer-reviewed life-cycle assessment literature (anchored by Robertson & Klimas's 2019 Lego LCA, Yamaguchi's 2025 wooden toy LCA, and Cotton Inc.'s 2016 textile LCA). The avoided-emissions calculation also uses a category-weighted average toy weight of 2.2 lbs and a conservative reuse-emissions ceiling of 10% of new manufacturing. Underlying spreadsheet and source citations are available on request.
Toycycle's avoided-emissions number
The 119-ton figure is the product of four multiplicands: reuse volume (more than 30,000 items, October 2019 through April 2026), category-weighted average toy weight (2.2 lbs), per-pound embodied-carbon factor when manufactured new (4.0 lbs CO₂e/lb), and the share of embodied carbon retained by reuse (90%). Per-item avoided emissions land at 7.9 lbs CO₂e; 30,000 items yields roughly 119 tons.
The flight analog is included for accessibility, not precision. A one-way SFO–JFK economy seat runs near 660 lbs CO₂e per passenger on standard methodology, putting 119 tons in the neighborhood of 360 such flights — a regional resale operator displacing carbon on the order of a planeload of cross-country travelers.
The calculation is conservative on every input. It uses the lower end of published per-pound embodied-carbon factors, the lower end of category weight estimates, and the higher end of reuse-phase emissions (10%, covering cleaning, inspection, and last-mile redistribution). Even so, reuse is the single largest carbon-mitigation lever a parent has inside the toy category.
Per-toy emissions comparison: new vs. reused
These per-toy figures combine an average toy weight of 2.2 lbs with the per-pound LCA factors above — so a typical plastic toy at 2.2 lbs × 4.0 lbs CO₂e/lb yields the 8.8-lb new-manufacturing figure. These per-toy figures combine an average toy weight of 2.2 lbs with the per-pound LCA factors above — so a typical plastic toy at 2.2 lbs × 4.0 lbs CO₂e/lb yields the 8.8-lb new-manufacturing figure. Per-pound embodied carbon for a typical toy is dominated by manufacturing energy: raw-material extraction, polymer or wood processing, and factory operations. When a toy is reused, those emissions are amortized over more than one user. The marginal cost of the second user is cleaning, packaging, and last-mile transit — the 0.9-lb figure above.
The 8.8 lbs new-manufacturing figure is a weighted average across the typical resale mix, not a single-material number. Plastic toys carry roughly 4 lbs CO₂e per lb on Robertson & Klimas's 2019 Lego LCA; wooden toys near 1 lb CO₂e per lb on Yamaguchi's 2025 wooden-toy LCA; fabric and plush closer to 7 lbs CO₂e per lb on Cotton Inc.'s 2016 cotton LCA (synthetic plush typically falls in a similar 5–9 lb-per-lb range, with polyester at the higher end). A typical resale inventory blends all three, weighted toward plastic and plush.
Why reuse beats new sustainable manufacturing (the waste hierarchy)
That four-tier hierarchy — reduce, reuse, recycle, dispose — places new manufacturing below reuse on environmental merit, even when the manufacturing is sustainable. Any new product, however well-sourced, requires a fresh round of extraction-to-factory-exit emissions. Reuse skips that round entirely.
Recycling helps, but it's not equivalent to reuse — and it carries its own carbon footprint. The recycling process uses energy at every step: collecting, sorting, cleaning, melting down, and reprocessing materials all require fuel and electricity. For plastics (common in toys), this is especially energy-intensive, and the output is often lower-quality material than the original. Material quality degrades with each cycle, particularly for plastics. Reuse preserves the full material at the same use-value — the 90%-retained figure above.
The practical implication for parents: choosing a used PlanToys set is a strictly better outcome than a new one, and PlanToys' durability — solid rubberwood, replaceable parts — is precisely what makes the second-life market feasible. The waste hierarchy and the per-toy math agree: reuse first, then sustainable new, then recycle.
2. Why "sustainable new" is necessary but not sufficient
The waste-hierarchy logic established earlier can be misread as an argument against buying new sustainable toys. It is not. Sustainable manufacturers are doing the foundational work that the entire resale category depends on. PlanToys' rubberwood sourcing, Janod's wood-craft heritage and design-led durability, and Loog's modular guitar architecture are the reason certain toys earn a meaningful second life at all — and the reason curated resale exists as a category. The argument is additive rather than subtractive: reuse multiplies the impact of sustainable design rather than competing with it, and the two pathways are strongest when they reinforce one another.
Even the greenest manufacturing carries embodied carbon. A new PlanToys block set involves rubberwood harvest from end-of-latex trees, kiln drying, tooling, factory operations, and ocean transit from Thailand. The result is a meaningfully lower per-toy footprint than a comparable conventional plastic set — closer to 1 lb CO₂e per lb on Yamaguchi's 2025 wooden-toy LCA against roughly 4 lbs per lb for plastic — but the footprint is not zero. PlanToys publishes its sustainability framework openly, which is how parents can verify the claim in the first place. A parent buying new PlanToys has already made a meaningfully better choice than buying a conventional plastic toy; the next step in that decision tree is buying used PlanToys, which compounds the sustainability gain rather than undoing it.
The structural point sits in the waste hierarchy established earlier: any new product — sustainable or otherwise — requires a fresh extraction-to-factory-exit emissions cycle, which reuse skips entirely. This is not a critique of sustainable brands. It is a statement about the structural advantage of the second-life pathway, an advantage that exists precisely because sustainable brands build toys durable enough to use that pathway.
The relationship between sustainable manufacturers and curated-resale operators is therefore symbiotic rather than competitive. Sustainable brands invest in materials and design choices that enable second lives: PlanToys' solid rubberwood survives years of toddler play, WaytoPlay's flexible rubber roads are engineered to bend without breaking and to pass between siblings without wear, and Loog's three-string guitars are explicitly designed to be passed down as a child grows. Curated-resale operators — Toycycle, GoodBuy Gear, and Stork Exchange among them — turn that design intent into actual second households. The brands' sustainability claims become more credible when their second-life infrastructure is visible, and the resale operators are stronger when the inventory they curate is built to last.
3. The other side of the equation: where unreused toys go
Earlier we quantified the emissions baked into manufacturing a new toy. The other half of the lifecycle equation is what happens once a toy stops being played with — the disposal pathway most parents never see. U.S. EPA municipal-solid-waste data anchors this section. (See Methodology for category-breakdown caveats — toys aren't a discrete line in EPA's waste-stream taxonomy, so the figures cover all U.S. plastic, of which toys are a meaningful but unmeasured share.)
Most plastic toys are mixed-material by design — multiple polymer types fused together, embedded metal hardware, electronics, fabric inserts, and adhesives — which makes them economically and technically infeasible for municipal recycling streams to process. The "recyclable" stamps on toy packaging are aspirational; they describe the base material's recyclability under ideal conditions, not its actual rate of recovery once a multi-component toy reaches a curbside bin. Reuse skips this problem entirely by keeping the toy in productive use across a second household. That is why the resale-first step in the framework below is the highest-leverage move available to a parent — it sidesteps a sorting problem the recycling system was never built to solve.
Landfill is the majority outcome for the other 91%. The 27-million-ton annual flow has roughly quadrupled since 1980, and the share that is incinerated releases CO₂ along with trace toxics, while the share that is landfilled persists for centuries with some leakage to waterways and ocean systems. Every toy reused is one that does not enter this disposal pipeline. Worth noting: the 119-ton avoided-emissions figure established earlier excluded end-of-life emissions entirely, which makes the number conservative — including landfill methane from plastic additives and incineration CO₂ would strengthen the reuse case rather than weaken it.
Knowing where unreused toys end up gives parents leverage that abstract sustainability claims do not. The five-step framework in the next section turns that leverage into a routine: refuse what is not needed, check resale before buying new, choose sustainable brands when buying new is the right call, list outgrown toys before they break, and find a specialty recycler for whatever remains.
4. A parent's 5-step framework for sustainable toy buying
The carbon math, the brand-design lens, and the waste stakes converge on a small set of weekly decisions. None of the five steps below requires more than five minutes per purchase, and the order matters: each step should be exhausted before moving to the next, so the most sustainable choice gets first consideration and the least sustainable gets last.
Step 1: Refuse first — ask if you need a new toy at all
The most sustainable toy is the one not bought. Many "needed" toys are duplicates of existing ones, gifts that have gone unused, or replacements for toys that could be repaired with five minutes of glue or a missing-piece search. A 30-second pause before any toy purchase — physical or online — is the highest-leverage filter in the framework, because it eliminates emissions, packaging, and eventual disposal in a single decision.
Step 2: Check resale before buying new
If a new toy genuinely is needed, the resale market is the next stop. Curated resale operators (Toycycle, GoodBuy Gear, Stork Exchange) handle inspection, recall cross-checks, and sanitization before listing; peer-to-peer marketplaces (Facebook Marketplace, eBay, OfferUp) leave that work to the buyer. Either path beats new manufacturing on the carbon math, but curated resale closes the safety gap that peer-to-peer leaves open — by running CPSC recall cross-checks, hand inspection, and material-specific sanitization before any item is listed.
Step 3: When buying new, choose brands designed for second life
When the toy doesn't exist on the resale market, brand selection becomes the next lever. PlanToys, Janod, Loog, WaytoPlay, Tegu, and Hape build toys with materials and construction that hold up across multiple children — solid wood, modular components, replaceable parts, bend-rated rubber, and finishes that survive a second or third owner. These are the brands whose second lives compound the sustainability gain rather than ending at one household.
Step 4: List for resale when done
The circular loop only closes if outgrown toys move to the next family. Toycycle's full-service consignment handles pickup, cleaning, photography, and pricing for Bay Area families; nationwide sellers can list directly through the Toycycle marketplace or through GoodBuy Gear and Stork Exchange. Listing within six months of a child outgrowing a toy preserves the most resale value and the most embodied carbon, because condition degrades fastest in storage.
Step 5: For un-resaleable toys, find a specialty recycler
Some toys cannot be reused — broken safety-critical components, recalled items, lithium-battery damage. Specialty recyclers including TerraCycle accept categories that municipal curbside programs reject (mixed-plastic toys, soft plush, small electronics). Mailing in a small monthly batch closes the loop on whatever the resale market cannot absorb, diverting it from landfill and keeping the framework fully circular end to end.
The five steps compound on each other. More refuse means fewer purchases entering the system; more resale-first means fewer new manufacturing emissions; more durable-brand selection means more items eligible for Step 4; more listing means more inventory in the resale market for the next parent's Step 2; more specialty recycling means less landfill leakage. The 119-ton avoided-emissions figure established earlier is what aggregate adoption of this framework looks like at scale.
5. What curated resale looks like in practice
Speaking from Toycycle's own model: not all secondhand is equal. Every item is hand-inspected for damage, missing parts, and condition before it's listed — anything that doesn't pass is removed, not passed on. Recall screening happens at multiple points, and sanitization is matched to the material. There's also a published list of categories we won't sell, full stop. And when your child outgrows something, our consignment model keeps it circulating — not heading to landfill.
Toycycle as a working example
Founded October 2019 in Hayward, California, Toycycle has handled 30,000+ items to date and was named in the Ellen MacArthur Foundation's 2021 circular economy report on resale platforms.
The inventory backbone is brands designed for second life — PlanToys, Janod, Loog, and WaytoPlay appear repeatedly in Toycycle's hero inventory because solid-wood construction, modular components, replaceable parts, and bend-rated rubber all survive multiple owners.
Other operators in this category
Toycycle is one of a handful of operators applying this model. GoodBuy Gear (general baby and kids' gear, founded 2016) and Stork Exchange (premium open-box and overstock baby gear) work adjacent corners of the same category. Inventory and inspection scope differ, but all share the inspection-layer-before-listing structure that separates curated resale from peer-to-peer.
Parents do not need to use Toycycle, GoodBuy Gear, or Stork Exchange specifically — they need to know the category exists and can be evaluated against the five criteria above. The 119-ton figure is what one operator's contribution looks like; aggregate adoption across operators and families closes the loop on the toy industry's footprint.
Have outgrown toys? Turn them into someone else's beginning.
Toycycle handles pickup, cleaning, photos, and pricing for Bay Area families — and connects buyers nationwide with curated, inspected, sanitized used toys.
List your toys → Browse the catalog →The bigger picture
That 119-ton number at the top isn't a Toycycle achievement — it's the arithmetic of thousands of small decisions made by parents I've never met. Every listing handed off, every bin pulled out of the garage, every refused impulse buy compounds into the next family's first toy and the atmosphere's quieter year.
I started this in 2019 thinking we'd resell toys. What we're actually doing, six years in, is multiplying each other's care.
— Rhonda Collins, Founder & CEO, Toycycle
6. Frequently asked questions
Yes. Even the most eco-friendly new toy carries embodied-carbon costs — raw-material extraction, manufacturing energy, transport, and packaging — that reuse displaces entirely. The U.S. EPA waste hierarchy and the Ellen MacArthur Foundation's circular-economy framework both place reuse above new sustainable manufacturing, even when the new product uses recycled inputs or FSC-certified wood. Buying a used PlanToys set is a strictly better outcome on the carbon math than buying the same set new.
Roughly 90% of the toy's embodied-carbon footprint, depending on material. A typical used plastic toy avoids about 8.8 lbs CO₂e versus its new equivalent; a wood toy avoids about 2.2 lbs; fabric and plush items avoid 11–15 lbs apiece. The savings compound across a resale marketplace — Toycycle's resale of 30,000+ items since 2019 has avoided an estimated 119 tons of CO₂e, the equivalent of taking roughly 24 passenger cars off the road for a year.
Toys with broken safety-critical parts, recalled items, and battery-leak-damaged electronics should be removed from circulation rather than passed along. For broken plastic and small electronics, specialty recyclers like TerraCycle accept categories that municipal curbside recycling does not. Recalled items should follow the manufacturer's official recall return process tracked by the CPSC. Donating broken toys simply passes the disposal problem to someone else; specialty recycling closes the loop properly.
Yes, when properly cleaned. Material-specific protocols apply: hard plastic wipes with non-toxic disinfectant, wood with damp wipe plus dry brush, fabric with gentle machine-wash on warm, battery toys externally only. Curated marketplaces like Toycycle sanitize before listing using documented protocols. For peer-to-peer purchases, the buyer applies the cleaning step. See also: the Toycycle safety policy.
Keep original packaging where possible, store loose parts together in labeled bags, address minor wear early before it compounds, and list with a curated resale operator (Toycycle, GoodBuy Gear, or Stork Exchange) within six months of a child outgrowing the toy. Photographing and labeling toys at end-of-life makes resale logistics simple. The longer a toy sits in storage degrading, the less of its embodied carbon survives to the next family.
Methodology and Data Notes
The 119-ton avoided-emissions figure combines Toycycle's internal reuse volume (more than 30,000 items, October 2019 through April 2026) with per-pound embodied carbon factors drawn from peer-reviewed life-cycle assessment literature — Robertson & Klimas (2019, Lego LCA), Yamaguchi (2025, wooden toy LCA), and Cotton Inc. (2016, textile LCA). Inputs use a category-weighted average toy weight of 2.2 lbs, a per-pound embodied-carbon factor of 4.0 lbs CO₂e/lb for the blended resale mix, and a conservative reuse-emissions ceiling of 10% of new manufacturing (covering cleaning, inspection, and last-mile redistribution). End-of-life emissions were excluded from the calculation, which makes the figure conservative — including landfill methane and incineration CO₂ would strengthen the reuse case. U.S. waste-stream figures are drawn from the U.S. EPA's 2018 Sustainable Materials Management dataset; EPA does not break out toys as a discrete category, so figures describe broader plastic, textile, and wood streams that include toys. Source citations and underlying spreadsheet are available on request to partnerships@toycycle.co.
Sources and References
- Robertson, M. & Klimas, C. (2019) — Life-Cycle Assessment of Lego Plastic Toys. Cited in industry LCA syntheses; per-pound embodied carbon ≈4 lbs CO₂e/lb for ABS/PP toy plastics.
- Yamaguchi, K. (2025) — Wooden Toy Life-Cycle Assessment, MDPI Sustainability. Per-pound embodied carbon ≈1 lb CO₂e/lb for sustainably-sourced wood toys.
- Cotton Inc. (2016) — Life Cycle Assessment of Cotton Fiber and Fabric. Anchor for textile/plush per-pound embodied carbon (5–7 lbs CO₂e/lb).
- U.S. Environmental Protection Agency — Sustainable Materials Management: 2018 Facts and Figures. U.S. plastic landfill volume (27M tons) and recycling rate (8.7%).
- U.S. Environmental Protection Agency — Reduce, Reuse, Recycle hierarchy.
- European Commission — Waste Framework Directive (2008/98/EC). Five-tier waste hierarchy placing reuse above recycling.
- Ellen MacArthur Foundation (2021) — Creating a Circular Economy for Toys. Names Toycycle among resale platforms scaling toy circularity.
- The Washington Post (2023) — Solutions for Discarded Holiday Toys.
- BabyCenter — The 6 Best Sites and Apps for Used Baby Gear.
- Green Matters — Where to Buy Used Toys Online.
- PlanToys — Sustainability Framework. Rubberwood sourcing and life-cycle approach.
- TerraCycle — Specialty Recycling Programs. Categories accepted that municipal curbside recycling rejects.
- U.S. Consumer Product Safety Commission — Recalls Database. Toycycle's recall cross-check source.
- Toycycle — Safety Policy. Material-specific sanitization and refused-categories list.
About the author: Rhonda Collins founded Toycycle in 2019 to make secondhand kids' gear feel as safe and easy as buying new. Toycycle's circular-economy approach has been featured in The Washington Post, BabyCenter, Green Matters, and the Ellen MacArthur Foundation's circular economy report.