If you can tap your foot you should try November's free music game. Inspired in part by Luke Rhinehart's 'The Dice Man' it involves rolling dice to decide what beats to play on.
You really don't need any 'proper' musical instruments for this game. A tin can, comb, hole punch or plastic bag will work just as well. Obviously, if you happen to have a Stradivarius violin to hand don't hide it away: that will sound just fine too.
Anyone can play. And you really don't need a fancy die like the one in the picture. A standard-issue six-sider will work just as well. Or you can make yourself a spinner with a matchstick and a piece of cardboard.
I post a new game every month, in addition to the ten on the website. If you sign up to the newsletter you need never miss one. The dice game is great fun. Cause a stir by playing it between courses at your local restaurant - there are plenty of things to make sounds with on a dining table.