Great inventions are often responses to simple problems. For Matt Younkle, the problem was a discouragingly long line at his college bar. Ten years later, the thirst-inspired spark of frustration he felt then has resulted in Chicago-based Laminar Technologies´s TurboTap (turbotap.com), a 4.5-inch-long stainless-steel nozzle that attaches to standard beer faucets and pours a beer twice as fast as existing taps.