Hello. I currently play several instruments and am looking to take up and acquire some decent skill with basically as many as I can. :)
I currently play:
-Guitars
-Bass
-Drums/Percussion...including cowbell.
-Piano/Keyboard
-Accordion
-Harmonica
So I'm basically open to any suggestions (within reason! No continuums!)
I'd go for violin or saxophone next. They're both excellent instruments that are supposed to be pretty challenging.
Sitar, dulcimer, and didj.
A real man would play the accordion or bagpipes.
Needs more cowbell.
Edit: I see what you did there.
Learn the didjeridu. Its badical, and unlike anything else you could play, pretty much.
Learn how to play a trash can.
Like those guys in Stomp.
Vioin. Challenging, yet so beautiful.
Fiddle
Xylophone. Anyone can play it; few can play it well.
I am (was?) one of those few.
I think you should get better at your current instruments before taking up a new one. You should take one very technical song and learn each part for all the instruments!
Harp.
If you don't dig, then violin.
Bag pipes, They sound and look funny but you could make a new career out of it.lol
Sax, harp, and/or banjo.
I'd say go for the Trumpet. And if not, violin.
I'm assuming you havn't gotten really good at all these. You should pick one instrument, concentrate on that and get really bad *** on it. I'm gonna suggest the drums:D