Amazon: LED Color Changing Fiber Optic Hair Barrettes, 15 Pack $9.99 by Etekcity. The fiber optic lights strands can be cut to match natural hair length, batteries are replaceable, easy clip on or off hair, backpack, purse or clothing. These make great party favors!
Amazon: LED Color Changing Fiber Optic Hair Barrettes, 15 Pack $9.99