Remember Winamp's wonderful audio visualizers? They let you see your music through trippy ever-evolving patterns, but they couldn't hold a flame to this Pyro Board, which trades animations for a glowing grid of flames produced by 2,500 gas burners. Awesome first, safety second.
Phosphorous pixels, liquid crystal, LEDs, lasers, electronic ink and now little flames used as pixels of a display. It works by transmitting "sound waves through a flammable gas creating alternating high and low pressure zones."