Creating delicious cocktails can be difficult. The Barsys Smart Coaster makes it as simple as filling a glass. It connects with an app and knows exactly how much of each ingredient is needed for a given recipe. Simply pour until the light changes color, then move on to the next step. The end result is a bar-worthy concoction that's guaranteed to be a step above what you'd get "eyeballing" your measurements or fiddling with a jigger.