If you have a budding physicist, scientist, electrician or tinkerer, chances are they've wondered about the effect of electronics on motion. This gift says, "Wonder no more!" What can be built? A lighted fan that changes colors, an air fountain, a motion detector, siren sounds, a mini car…the project list goes on, all the way up to 165! Requires 4 AA batteries, not included. From Elenco Electronics Inc for ages 8-12 yrs.