Things You'll Need
Instructions
Insert the string through one of the holes in the button, then back through the other hole. Tie the ends of the string together to form a loop.
Hook your fingers onto the string loop on either side of the button so the button rests in the center of the string.
Swing the button around in a circle to twist the string loop. Pull outward quickly to unwind the string, then inward to allow the movement of the button to wind the string up again.
Pull out on the string again when the button stops spinning to unwind the string in the opposite direction, then in again to allow the button to wind the string again. Repeat this step to keep the button moving.