A toy on a string is an object that is attached to a string and can be manipulated by the user. The two most common examples of toys on a string are kites and yoyos. Kites are traditionally made of paper, cloth, or plastic and have a frame of sticks covered with a material. They are flown in the air and can be maneuvered by the user. Yoyos are round objects with a hole in the center that can be spun around the string. They are used for tricks and games.