My main VCS is now at my nerdy self-hosted Gitea instance git.randomplace.online:
My greatest spare-time creature. The first Home Assistant fully native Android client from the times when there were no official alternatives.
Firebase Cloud Functions for HA Client app
An Android remote control for a custom Arduino-based Bluetooth RC car
The first somehow useful app I wrote for an Android. It was so long ago, that I don't even remember what it does.