I don't release most of my personal projects because I don't want to support them (nor do I want to throw unsupported stuff out there for people to use and trip on).
With that in mind, here are a few of the things I've written to solve specific problems. I consider these all finished, and have no plans to update them further. They are intended to be copied and customized to your own needs.
a command line todo list tool, with support for inter-task dependencies
i3-workspace-namer, an i3wm helper to add the titles of windows to the i3 bar
executable tar archives
backing up Solo FIDO2 keys