I'm really good at building things that shoot, hurl, or throw stuff.
In my office, I like it quiet, so I can concentrate.
Every day, I walk with my dog - summer, winter (it gets -20 F in Saint Paul), rain or shine. The nicer the day, of course, the longer the walk.
When something good hits me, I'll use Siri to make a note so I don't forget.
There are interesting scientific and historical connections between these things that I just love.
Yeah, it's a weird little niche, but by God, it's my niche.