[seligman99]

A few come to mind:

A command line calculator. While it's on github, is really just made for me because I wanted something to do quick math and convert different units.

A note/todo app. Started it's life as just a text file in a git repo, but now has a web front end, a simple TUI front end, and a little backend so it can add repeating tasks or tasks future days when they come along.

I also have a little python script running to control my exterior Hue lights, turning them on at sunset and such. Just added a thing today that turns on the lights in my office to full brightness when I open Zoom. It's nice, but every time I go down the rabbit hole of home automation, my SO rightly gets annoyed at the silliness of it all.