a Bechstein upright piano (well, not really mine, but I'm the only one who plays it. I wish I had a grand piano so I could fool around more with the strings, though)
acoustic guitar that belonged to my mother
a pair of congo's
and some small stuff like a jew's harp, two harmonica's, casio vl-tone, and basically anything I can find which makes a nice sound when I hit it
and I will buy a melodica very soon, for the sake of melancholy