1/10th scale electric RC Racing. Raced in a lot of ROAR events till I gave it up and started golfing instead. I like anything where I get to tinker with stuff. Sold all this stuff to buy golf clubs.
I'd probably get back into ATV's or SxS's. It's expensive but really the only thing I've alsmost loved as much as I love golf. The fact that I live in IL is also horrible for any off-road type of hobbies except hiking.
Definitely spend more time on guitar. Already workout excessively. Maybe shoot a lot more billiards. Have all kinds of projects sitting in the garage that golf has put on the back burner. But, golf has my attention at the moment!