The Cello is my first and only attempt at a bowed instrument. I
  also got an accordian online the same way just to see if I could
  play it. Played it for a while, then sold it (although it was
  more money and I sold it for less than I paid for). On my 'one
  of these days' list is to go through all of instrument families.
  I never tackled the flute-type instruments, although I _can_
  play bottles, so I imagine it's learning fingerings and stuff.
  Once made my own Bugle out of a trumpet spit, a plastic tube cut
  to fit, and a funnel. Sounded just like a trumpet to me, and I
  made tuned wind chimes out of pipes by studying the math behind
  bells and resonance frequencies, and one string washtub bass
  using a washtub I bought JUST to make into a washtub bass tongue
  emoticon I resist the urge but I like that it's possible to make
  music using whatever's lying around. Oh, another cool thing to
  learn is how to play glasses. Finger dipped in vinegar water and
  playing the rims of glasses and things. Makes eerie sounds and
  makes people stop dead in their tracks to listen.