Your post made me giggle. Well, I'm a musician and dh is a drummer (I guess that's a musician, too) and Sprog is music-crazy. We have a full sized drumset in the family room (DON'T GET THAT, FOR THE LOVE OF GOD!) and also a piano, but she only gets to play those with supervision.
What about some cool kids' percussion instruments to play along with her favorite CDs? We have a Melissa & Doug wood set, garage sale find, that has a nice variety of shakers, a tambourine, wood blocks for banging... I've seen similar sets made of plastic, too. There are the classic colorful xylephones - those are fun.
Sprog's current favorites are a couple recorders and a harmonica but she got the idea of how to play them because I demonstrated. It still took her forever to figure out the difference between sucking and blowing on them, so hours of annoyance for her. She had a breakthrough two weeks ago-finally!
Try them out before buying. You might not play instruments yourselves but you can tell if something has a pleasant tone vs sounding like cheap junk.
You didn't ask but we're totally addicted to the book Zin Zin the Violin right now. It's a great read-aloud poetical book about different instruments. Great artwork. Your daughter might also like that a lot.
Often bumbling mother to baby girl "Sprog"
Born November, 2009