Technically this is not a night light, but it is beautiful! Just attach to the Swarovski Crystal Solar Powered Rainbow Maker a sunny window and the solar panel of this rainbow maker will capture the sun’s rays, powering the tiny motor. This turns the Swarovski crystal, which captures and splits the sun’s white light into dancing rainbow-colored reflections. Approx. 5-1/2″H overall; 1-1/4″ diameter crystal. Less than $20.