Little programs or scripts or automations you’ve created ad-hoc to solve a particular single use case
I have lots of shortcuts i make on my phone and I have one i love that detects when bluetooth accidentally or purposefully disconnects from my speaker and reconnects it and fixes a playback glitch so its back to playing properly
I wrote a link handler, that allows me to just click on magnet: links or open torrent files and send them to my remote torrent client. I use this almost daily.
I also built a torrent crawler that fetches multiple torrent sites and shows me the new stuff, while filtering out shit quality stuff and things I already have.
And then I built a viewer with search for multiple defunct story sites I crawled years ago.
Those tools I use all the damn time.