Groove tube
With the Groove Tube, You Can Transform Your TV into a Moving Groooooovy-Baybeee Light Scuplture That’s Pretty Much Perfect for a Proper Party Atmosphere.
As the TV or computer screen behind the tube changes, the grid also changes – in time with whatever is on the channgel. The faster the TV action, the more the tube pulsates and the colors change. And besides, it’s way less predicable than a lava lamp.
Source: by Fashiontribes