Rainbows seem to fascinate everyone. With the Solar Rainbow Maker, you can create your own dazzling rainbow light. Stick the suction cup to the inside of a sunny window and the rainbow maker's attached Swarovski crystal starts rotating, sending the prisms dancing on your walls. A true delight to cats, children, and the inner child within all of us, the Solar Rainbow Maker also makes a wonderful wedding or house warming gift as it brings good qi into your home according to feng shui. A long time Real Goods favorite.