John J. Stone-Parker
John J. Stone-Parker is one of the youngest inventors in the world. While still a small child, John was very fond of creating new things. He saw that his dad had trouble every time he had a drink with ice cubes in it, so John came up with the idea of creating a star-shaped device that would prevent the ice cubes from slipping out of the glass. He patented this object when he was just four years old in 1989.