I have a Miyoo mini plus and sometimes, I feel the itch to play something just to fiddle around a bit. I'm looking for something that's easy to pick up and pla' for a few minutes up to maybe half an hour.
Bonus points if I can play it without needing to use my speech recognizing brain functions. It would be ideal if I can just occupy my hands a pit while still listening to what my colleagues say in remote meetings (I used to use a rubik's cube for that). ADD is a bitch.
I already got:
Apotris (really awesome, but a bit stressful after a while)
Wario Ware (can also get a bit stressful)
Pokemon Pinball Saphire and ruby (great, but has gotten a bit repetitive now)
... that's it
It doesn't have to be GB/GBA, but I recon that those systems have the biggest bounty of pick up and play games. The Miyoo Mini Plus can emulate everything up to PS1, so SNES and PS1 would be fine, too.
So something that keeps you occupied but still keep you attentive to a remote meeting? Puzzles like Sokoban(-clones), Tetris, Snoopy's Magic Show, Breakout/Arkanoid? Perhaps jump and runs like Super Mario Land?
I spent ages playing it, and still remember building my stages and characters (for context: there is a built-in level editor, and you can draw your own playable characters, pixel by pixel, frame by frame), I don't think I'll ever forget such a unique game...