The company propellerhead which is a software company making musical programs has recently made a big 4×4 button-matrix, on which you can play for example drum sounds. By connectring this device to their software one can make music while dancing (or vice versa). The really cool thing about this is that you don’t haveto have any music to keep the party going, you just need people with good sense of rythm.
It seems that it takes some practice to be able to use this to its full potential, but I really think this would be an awsome thing to have at your random house-party. Take a look for yourselves in this (unfortunately not so very good) video:
Video by Propellerhead
//Josef Eklann, Group S