This sinister device seems at first glance to be an innocent ping-pong ball. Can be used to illustrate the idea of an electric circuit to children-show how electricity can flow through a chain of people holding hands, or that a little dampness can improve conductivity, et cetera.
— In a September 2014 survey, Mary Porter Green, owner of Curiosity Zone in Broadlands, Va., told TDmonthly that UFO Balls are one of the store's best-selling science and nature toys.