cello and have a violin right now but can't play it.
but soon....soon...
Wow... you're so lucky. I would LOVE to buy and learn how to play a string instrument (other than guitar). Cello is probably my favourite.
The cello makes a nice sound. I really enjoyed playing it. The violin I got is a really cheap one with a crappy bow that I'm going to use to learn. I have to buy a tuner for it because I suck at tuning and can't do it by ear and a book or two. Other than that, I'm not going to spend a ton of money on a trainer.
Now the guitar is obviously one of the instruments that I'd like to learn. It's one of those "cool" instruments. Everyone wants to be the guitar hero.
piano
Oh, and the piano too. I'd like to learn the piano but don't have the money for that one.