Lots of small stuff like bots and scripts to automatically rename files that I use locally every single day

Then things like:

“Fix My Japanese” - uses LLM to correct Japanese grammar (built with Elixir LiveView): https://fixmyjapanese.com

It has different “Senseis” that are effectively different LLMs, each with slightly different style. One is Claude, one is ChatGPT.

Or a slack bot that summarizes long threads:

https://github.com/dvcrn/slack-thread-summarizer