Since the latest iOS minor version (some time in the last month or so), certain models of AirPods are integrated in the Find My network, meaning if you lose them, other (participating) iPhones in the area (~1b worldwide) will report their location as they go past. Meaning they should be much harder to lose.

https://support.apple.com/en-us/HT207581 https://www.theverge.com/2021/10/5/22711557/apple-lost-airpo...

Speaking of, the Find My network also seems excellently designed. Reminds you if/when you leave any tagged item (keys, wallet, etc) behind.