Besides cars, working on small engine stuff on the side, electrical stuff playing with transformers/capacitors with high voltage and sometimes high current, I play guitar, I like to shoot bb guns with friends, lately has been at tv's lol. I do have a t-maxx but haven't used it in a year and a half, I like to film stuff but it's always my hobbies so it probably doesn't count as a hobby in itself.
I also enjoy going to my uncle's place that he kinda let go, and I would tear down tons of brush and burn it. It was work but I enjoyed it, I got to work with fire and machinery so I was happy. Plus it's actually a nice place to shoot guns and have a bonfire when the work is over, also going in the river to catch crayfish or to say you did lol. That's up in ray, mi.
Pressure experiments too, I put pressure in all sorts of containers and see how much they can take, and eventually blow them up. A friend and I are pyro's with fireworks when it comes to that time of year, that's always fun. I think that's about it.