At Sausalito Ferry Co. we have a pretty large collection of solar toys. All of these toys are powered by a solar cell which power the moving part. They need no batteries and work quite well with normal interior lighting. The smiley face figure in the video is similar to one made by Tomy in 2002. The slow steady motion of the nodding head provides a calming effect so the Smiley Face Solar Toy is good for a work desk.