Thanks to clever engineering and a beautiful heart-shaped Swarovski crystal, the rainbow maker from Kikkerland uses the sun to fill a room with rainbows. Like an active piece of art, the piece revolves when powered by direct sunlight, catching and refracting pretty bands of color. An enchanting piece for children and pets, the rainbow-maker adds cheer to any room and brightens up an interior. No batteries are necessary, and the piece includes a suction cup and a wire hanger for easy mounting. A great gift idea, it measures 6 by 1 by 2 inches. Versions are also available with round and double crystals.