StemLocks that clips the stems of drinks to the serving tray, preventing them from sliding around and spilling all over diners. The marketing materials suggest this product could be a game changer for the restaurant industry. Here's Cohen narrating the story of how this idea was born: "We were serving one-hundred and fifty flutes of Champagne to our guests, and the entire wait staff was buzzing around the dining room. Someone shoved a chair out in front of a server, who attempted to steady one flute on her tray and ended up spilling everything onto the ground. As we mopped up the mess, I thought, ‘Someone should invent something to prevent situations like this." Check out the hilarious demo video after the jump below.