For those of you with a musical bent, or just too much spare time - consider making yourself a set of Arduino-based air drums. Using a midi device interfaced with an Arduino, some accelerometers placed on drum sticks, and a light sensor and another accelerometer in footwear, a somewhat successful drum ensemble can be simulated. For example:
Imagination, some technical knowledge and an Arduino board make these sorts of projects possible. Here at Freetronics we have a range of Arduino-compatible boards to help you along, light sensor and and accelerometer modules to feel the movement of the drum sticks:
However to get started, you can download the Arduino sketch here, and design files from here.