Gadget.Brando.Com.HK has a DJ Plasma Light that reacts to music to create an interactive light show. They are super-cheap – $18. Cheap enough to tempt me to get several. Let me know if you’ve used these and, if so, what you think. Features: DJ Plasma Indication Tube ON/OFF power switch Lightning or Music/Sonic switch Music/Sonic… Read More DJ Plasma Light Reacts To Sound