Dozens, one of the more outwardly useful ones notifies me of a certain band's latest LP drop (basically just queries shopify's public-facing JSON for any shop you give it).
I've also got a stupid one: a mouse waggler. My work enforces screen lock times to be 5 minutes, and I have two computers, one on an air gapped network. So when development happened in the air gapped PC, and I inevitably had to look up docs for something, I would always be prompted for my password. So, I made a program that nudged my mouse just slightly every five minutes. That has essentially turned into my Windows API test bed. Someone will ask, how hard will it be to implement X for Windows? I'll try and find a use for it in this waggler, and look how to implement it.
This has also lead to the waggler part being obsoleted by one function call:
SetThreadExecutionState(ES_CONTINUOUS | ES_DISPLAY_REQUIRED);