Jamie built built a simple on-screen keyboard for a jazz piano tutorial website.
https://www.jamieonkeys.dev/posts/piano-keyboard-javascript/
https://www.jazzkeys.fyi/
Color cycling still is beautiful.
https://news.ycombinator.com/item?id=31402436
http cats and dogs.
https://http.cat/
https://http.dog/
Non-electronic computers that work when you color them according to a simple set of rules.
https://ipfs.io/ipfs/QmYz7DPRWypGQcbAHr7Mi8EKB6ntSPsEnUsCXbAhBiHQZP/