The term 'Spinners on Strings' refers to the classic toy known as a yoyo. A yoyo is a two-piece toy consisting of an axle connected to two discs, and a length of string looped around the axle. When the string is wound around the axle and the toy is thrown downwards, it will spin rapidly before returning to the hand when the string is tugged. Yoyos have been popular toys for centuries, and are still enjoyed by children and adults alike.