For those of you who are obsessed with Guitar Hero and or Rock Band and have a room entirely dedicated to your virtual stardom comes the HexoLight from RockGear. The LED lighting system is an interlocking honeycomb style rig allowing you can continuously add more lights to your array.
The lighting system works independently from your gaming console as the control unit has an internal microphone that makes the lights to blink to the beat. A basic 3 light unit runs at $30, making it a not so wallet busting gift idea. The one picture above is $120. Not sure if they come with any mounting accessories.