Headbang, a rhythm game that you play by bobbing your head while wearing Airpods while listening to music, is what I'm considering building next. The idea came from someone else using Airpods to create a racing game (RidePods).

(But also just launched https://ChessHoldEm.net this weekend)

Headbang concept sounds really fun, I'd love to play that as a fan of rhythm games, but wow my neck would hate me I think. I am no George Fisher in that regard