Update - sold out after three days. I have used a number of adapters. A few notes - 1) they are "sharper" than the Proof-Labs version; 2) small ones are useless (tried on four people with large and small ears); 3) they are cheaper than analogues; 4) they don't fit AirPods perfectly (too much skin around the ear gel); and 5) they're very difficult to install and remove, which is a nuisance since they won't (obviously) fit in a charging case.
2 Pack GLCON EVA Carrying Cases - Small Electronic Case For Earbuds, Earphone, Charger & More - Shockproof Exterior & Portable Storage Pouch Bag - Blue
24 Review
Large Waterproof Cable Organizer Bag For Travel, Universal Electronics Accessory Holder, Portable Gear Carry Case For Cables - Black
28 Review
Elago AirPods 2 Dust Guard Cover - Gold, US Patent Registered - Compatible With Apple AirPods 2 Wireless Charging Case
27 Review
AirPods 3 Case Cover 2021 Version Soft Silicone Fur Ball Keychain Women Shockproof Protective Visible Front LED Light Pink
24 Review