Snap circuits by teaching kids about Electronics by snapping together colored-coded components on a plastic grid. They can make things light up, move, and make noise by connecting the pieces. Hands-On for cognitive function and creativity. The large set has 203 pieces with 200 Projects and has never been opened for $25 and the small set has 20 pieces for a $15 and is in excellent condition. I also have Minecraft bee cottage for $15 and Picasso magnet tiles, 60 pieces for $15.