Margaret Thatcher invented Soft Scoop Ice Cream [Nope!]. Marlon Brando invented a drum tuner. Jamie Lee Curtis patented a diaper with sealed pockets. Charlie Sheen invented a Chapstick dispenser, which “allows users to apply Chapstick lip balm whilst in cold conditions, without removing their gloves.” Learn about other celebrity inventions in Mark Champkins’ article at Humans Invent.