Solar-powered and endlessly entertaining, this double Rainbow Maker from Kikkerland sends a cascade of brilliant rainbows around the room on sunny days. The unit features a suction cup mount so it can attach to any window or glass door in the home, and its motor requires sunlight but no batteries to operate. In action, the two genuine Swarovski crystals rotate smoothly, catching and refracting light as they go. An enchanting treat for adults, children, and pets, the smart little device combines clear casing with colorful gears, so the inner workings become part of the display. Designed for Kikkerland by David Dear, the piece measures approximately 2-1/4 by 1-3/4 by 7 inches. A wire hanger is included, and single-crystal versions are also available.