If your kids want to make their own dazzling light shows on the cheap, check out the 2012 line of FyrFlyz, from Star Entertainment. These FyrFlyz feature a goggles-shaped piece of plastic that house different colored LED lights. There are two strings attached to the plastic part – using those, kids can swing the lights around and alter the shape of the lights by tightening or loosening the strings. With a little creativity, kids can use FyrFlyz to create tons of shapes and effects as the lights swing about rapidly.
And again, that light show comes very cheap. You can get a set of FyrFlyz off of Amazon right now for a little over $4.