Some time during the lockdowns, I became obsessed with finding a keyboard that was better than the Apple Magic Keyboard. This quickly led me down multiple rabbit holes to the point where I now on a regular base release custom-designed keycaps (and soon keyboards).
It's a fun hobby; it inspired me to pick up 3D design (something I've been wanting to do for years but kept putting off), but also allows me to work with physical design instead of purely digital.
Here are some examples of projects I've got going. You can find more on mvkb.com. I also occasionally do commission projects, so feel free to reach out if that's something that sounds interesting to you.