I don't really do stuff that could be called hobbies, but I have no issues with still doing things that many consider masculine, such as mechanic work, remodeling, welding, etc.
Heck, I rebuilt my house, doing most of the work myself, since I started transitioning. I've also dropped in a new piston in a 454 for an rv and do other stuff involving rvs, my lawn mower and anything else I need work done to.