Well... interesting thread. I play a lot of instruments - piano is my first and true love, though I've discovered historic instruments, too - historic pianos are IN-CRE-DI-BLE to experience - hear in person, and play, if possible. AMAZING things come out of the instruments that our favorite composers were actually writing for. I don't have much opportunity to play such instruments though, aside from harpsichord (which I do have).
I also play (in order of proficiency): violin, guitar, hand drums and other percussion, like castanets, ukulele, cura saz (fantastic little instrument with 19 frets per octave - woo hoo!), native american flute, ocarina and I recently acquired a South American bamboo flute that I have not yet learned to play, but has a wonderfully deep and rich sound. Also have a banjo that needs a little work that I haven't gotten to yet, but look forward to. Let's see, what else? Also acquired a tourist grade gusle - which was cool to learn about but not so much to play (bowed instrument from yugoslavia area). Looks way cooler than it sounds. Hmm...am I missing anything? Lol. I'm insatiable, and kind of an instrument junkie - can you tell?
When I run across something interesting with a nice sound at a thrift store or garage sale or something, I'm pretty much hooked. Especially if the instrument is not one with which I'm immediately familiar - just more of a pull to get it, even if it's only to figure out what the heck it is.
My little cura saz, for instance, I got for about 6 bucks if I recall right. No one else knew what it was, either, I guess. Needed a bridge (which I made) and new strings (half were missing), but it was obviously a real instrument of decent quality. And hey, for six bucks, how can I lose, right? It's a fun and provacative little instrument.
So, there you go. If I had to add to that list... well, I probably will at some point. I'm not a huge wind fan, but I love oboe (not much desire to play one, though). Love cello, too. LOVE it. But would rather listen than play. Organ is AMAZING but not very accessible in practical terms. It might be the only instrument that is actually HARDER to learn to play than piano.
I suppose my list will go wherever destiny takes me!
JH