A (general purpose) migration tool written in bash.
https://github.com/zenoamaro/rash
Honestly, I planned to do much more work on it before showing it to someone, like tests (yes) and a real launch script, and then it would probably become less ridicolous. Or maybe not.
But even then, why not? I had fun building it, and I learned a lot. And if there's something in the world that I like, it's a fun toy.