Despite myself, I have found this a really interesting thread. It reminded me of when I was researching reef aquarium set ups. I found one good 'ol boy in the states who's personal website described his hobbies as "reef keeping & collecting WW2 fighter aircraft" Damn I wish I had his discretionary budget.
Oh BTW, My hobbies are minimizing the depth of the sh1te I'm in with the minister for finances, and a banjo that I truly really suck at, but still love.