Scope: Gliders, Launchers & Flying Toys (supplies > play > toys > gliders) — hand-launched glider/motorplane model planes, flying discs & rings, returning boomerangs, and launcher-powered flyers (stomp-rocket air launchers, slingshot/catapult flyers). Excludes kites (sibling catalog leaf `kites`) and lawn darts/dart games (sibling catalog leaf `darts`).

Seed:
1. Gliders equivalent of harvest_date: toy_safety_certification (ASTM F963/EN 71 mark) — a projectile-toy category's governing cert, almost never a structured listing field, usually only visible on a package photo, expensive to backfill at scale.
2. An aerodynamics/model-flying persona thinks in "delivery form and interaction" terms: they'd check launch_mechanism × body_material × age_band before range claims — e.g. a rubber-band balsa motorplane paired with a 3+ age grade is a mismatch a typical buyer wouldn't catch, but marketing copy about "flies far!" is what most buyers see first.

Sources:
[wikipedia_toy_safety] https://en.wikipedia.org/wiki/Toy_safety — ASTM F963/CPSIA governs US toy safety, choking-hazard age labels — fetched excerpt: "ASTM F963-07 Standard Consumer Safety Specification on Toy Safety (effective February 2009)... this label is sometimes mandated by the CPSC, especially for toys which may present a choking hazard for children under three"
[wikipedia_flying_disc] https://en.wikipedia.org/wiki/Flying_disc — disc diameter bands, rim/spin mechanics — fetched excerpt: "Ultimate has a unique standard with a diameter of 27.3 centimetres (10.75in) and a weight of 175 grams... the minimum diameter of a golf disc is 21cm (8.3in)... rim for golf discs are sharper than ultimate frisbee, to reduce wind drag"
[wikipedia_boomerang] https://en.wikipedia.org/wiki/Boomerang — boomerang span/weight/range, precession, safe-catch shape — fetched excerpt: "Most sport boomerangs weigh between 70 and 110g, have a 250–300mm wingspan, and a 20–40m range... round-shaped boomerang... allows for a safer catch"
[wikipedia_paper_plane] https://en.wikipedia.org/wiki/Paper_plane — glider trim vocabulary — fetched excerpt: "The most common adjustments, modelled after glider aircraft, are dihedral angle, ailerons, elevators, and rudders"
[guillow_cadet] https://www.guillow.com/product/cadet/ — balsa kit wingspan/age/assembly — fetched excerpt: "Kit 4201 Simple Build-N-Fly Model Wing Span: 14½"... For Ages 13 and up"
[guillow_sky_streak] https://www.guillow.com/product/sky-streak/ — balsa motorplane as rubber-band type — fetched excerpt: "No. 50 12\" Balsa Motorplane"
[aerobie_proring] https://www.aerobie.com/products/pro-ring — ring disc diameter/age/soft edge — fetched excerpt: "SIZE: Measure 13 inches in diameter... For Ages 5+... Soft edges are easy to throw and soft to catch... flies twice as far as most conventional flying discs"
[stomp_jr_glow] (via Internet Archive) http://web.archive.org/web/2026/https://stomprocket.com/products/stomp-rocket-original-jr-glow-rocket-launcher-for-kids-soars-100-ft-7-foam-rockets-and-adjustable-launcher-stand-fun-outdoor-or-indoor-toy-and-gift-safe-for-boys-or-girls-age-3 — air-pump launcher range/age — fetched excerpt: "air-powered launcher and 7 soft foam rockets that blast up to 100 feet... Age 3+"
[stomp_ultra] (via Internet Archive) http://web.archive.org/web/2026/https://stomprocket.com/products/stomp-rocket-the-original-ultra-rocket-launcher-6-rockets-launcher — longer-range launcher, older age grade — fetched excerpt: "STOMP to launch these rockets up to 200 feet in the air... ages 5 and up"
[stomp_stunt_plane] (via Internet Archive) http://web.archive.org/web/2026/https://stomprocket.com/products/stomp-rocket-original-stunt-plane-refill-1-glider-plane-only — launcher fires glider-plane inserts too — fetched excerpt: "Stomp Rocket® Original Stunt Plane Refill - 1 Glider Plane Only"

Branches:
- product_type -> glider_plane/flying_disc/boomerang/launcher_toy: each type is judged on a disjoint spec set (wing vs rim vs return vs range+projectile); see stomp_stunt_plane showing a launcher_toy can fire a glider_plane-type projectile, confirming the two branches are mechanism-linked but spec-distinct.
- min_recommended_age_band toddler_3_plus: makes trim-tuning, rim profile, return skill, and projectile-type nuance irrelevant, since a stomp-launch/ready-to-fly toy for this age is pre-set and not meant to be tuned or chosen between inserts (stomp_jr_glow is age 3+ and ready-to-fly; guillow_cadet, which needs build/trim skill, is age 13+).

Noise (brand-sheet rows left out):
- SKU/model number (Guillow) — internal catalog code, not a buying spec.
- Package box dimensions/weight in lb (Guillow Cadet height/width/depth fields) — shipping-box size, not the model's flying size.
- Price and star rating (both brand sheets) — never facets per house rule.
- "Shop retailers" / social links / how-to video links (Aerobie, Stomp Rocket) — navigation, not specs.
- "Does not float in water" (Aerobie Pro Ring) — real but niche; folded as an aside, not worth a dedicated facet at lean depth.

Corrections (2026-10-26):
- Removed `boomerang_return_type` and `disc_rim_profile` from `min_recommended_age_band`'s `toddler_3_plus` makes_irrelevant: return-vs-not and catch-edge safety are basic safety facts that stay relevant at any age, matching `boomerang_catch_safety_shape`'s treatment.
- Added facet `disc_stability_rating` (understable/stable/overstable) under the `flying_disc` branch, sourced to Innova's own Flight Ratings page and Wikipedia's Disc golf article; added vocabulary entries for "Understable" and "Overstable".
- Added facet `kit_build_skill_level` (beginner/intermediate/advanced) under the `glider_plane` branch for `build_from_balsa_kit` items, sourced to Guillow's Cadet product page and its catalog-wide "Ease of Build" filter.
- Changed `toy_safety_certification.source` from `listing` to `researched`, matching its own `listing_field_hint` (photo-only, unstructured).
- Added vocabulary entry for "EN 71 / CE mark", parallel to the existing ASTM F963 entry, since `en_71_ce` was a facet value with no vocabulary definition.
- Added a judgement naming PDGA size/weight limits as the standard governing disc-golf tournament legality, scoped to `disc_flight_class`'s driver/midrange/putter values.