The ice cube is getting a much-needed 21st century upgrade. Cheers is a set of LED ice cubes that change color from green to yellow to red depending on how much you've imbibed. The cubes also send a message to your designated friend if you've passed your limit. Oh yeah, they also light up to ambient music and noise. They use an LED, an accelerometer, IR transcievers and a battery, and are ensconced in an "edible and tasty" jelly cube. The accelerator detects motion and calculates how many sips you've had. That, coupled with the timer cube, provides an estimate to your relatively drunkenness. The only catch: These cubes don't come cheap, costing $50 in materials to make. On the other hand, they don't melt, either.