A VR game. Still in the concept phase though. It'll be free as it's only a hobby project. It might never materialise but it doesn't matter. Most of the reward is in the process and the learning opportunities.
For work I'm working on AI implementation. Because the vendor does all the technical goodness I'm kinda bored. It's also quite a crap solution IMO and we're kinda forced to be all positive about it because the vendor is closely watching and they have a lot of buyin from the top.
I set up a local LLM server too just to feel like I'm actually doing something.