Depends what wewe define a "musical instrument." I play percussion (which you're already aware of xD). In case percussion is not a musical instrument, the ocarina. If the ocarina doesn't count, then shut up I want to learn how to play the ocarina.
I'll be the first to admit that I'm not the most musical of people, as evidenced kwa the off-key screeching that emanates from my mouth in lieu of singing. However, I do play a bit of violin and was in an string ensemble for a couple of years (hella fun). Doesn't count as 'playing', but I muck around on my brother's kinanda a little as well.
As for what I would LIKE to play... It's confession time. I have a deep and soul-felt upendo for the tin whistle xD I know it's sorta shrill and way too recorder-like, but Irish muziki is just so stirring,ya know?