I would say working on my bike is a hobby. I'm also in the old car hobby, owning a 24 Ford Model T and a 73 Triumph TR-6. So doing vehicle maintenance is kind of a common thread.
I also have been in computer flight simulation hobby (microsoft flight simulator) since the first MS version for the IBM PC back in the early 80s. That got me interested in computer scenery creation which got me into GIS and mapping.
For something different I study US Civil War history.
Finally I am involved in conventional (aka bullseye) pistol shooting. It's a good stress reliever. From that I've gotten into old firearm collecting and hobby 'smithing.
scott s.
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