These projects are little utilities that I build to learn and I use every day.
Web gallery to view images and videos stored on my NAS. It is simple, fast and does not get in the way. I build it on Golang with minimal dependencies and doesn't even have a database.
Simple service to track weights for multiple users. It's integrated with my Xiaomi scale through a Bluetooth Proxy that sends the weights automatically. I wrote it in Rust to learn the language by doing something that I needed.