Opened and revived a DOA GameGear by cleaning off the furry, green, PCB corrosion. Didn’t have any Isopropyl around, so I used vodka.

Noice (Ambient sound app, on fdroid) has a bunch which are nice.

I was surprised how pleasing the jet-hum and occasional fasten-seatbelt-tone is.

yucata.de (online boardgames)

Shattered Pixel Dungeon

Simon Tatham Puzzles

Lichess app - Puzzle of the Day

Gurgle app (wordle)

https://wikitok.vercel.app/ (endless mood-scroll Wikipedia)