String Ray (With Design in Mind, $129.95), Created by a London artist who wanted an interactive kinetic sculpture, String Ray consists of an ordinary string stretched between two rotating motors at the ends of two "rabbit ear" antennas. When turned on, the string vibrates and assumes all kids of beautiful forms, from pure sinusoidal waives to chaotic patterns. An adjustable strobe light adds a rainbow of color. String Ray is beautiful "scientific art," a three-dimensional light sculpture sure to fascinate all.