Build with Light
Block Lights allow children to do what man once thought impossible: build with light. Through the use of simple fiber-optics, Block Lights blocks weave light throughout the structure. Each block bends light in a different way: some let light pass right through, some light up the entire block, some have windows, and some bend the light at right angles. The light is projected from the base and changes color through the use of a spinning color wheel. Kids will be amazed to learn what they can do with the scientific principle of fiber-optics. They will be able to build structures they never dreamed of, and light them however they like. Great for children 5 and up. Is your child afraid of the dark? Leave the Block Light Structure plugged in, and the children can bask in the light of their own creation. Or, for safety reasons, leave it unplugged, and instead power it with 4 AA batteries. The sturdy blocks are make from clear, hardened plastic and come in all sorts of fun colors and forms. For only $39.99, the Block Lights are a bargain. Be sure to buy the expansion pack, with even more fun combinations. Block Lights!
(Once the best way for putting fiber-optics in each block was determined, the construction costs wouldn't be that high. Simple plastic fiber-optics are cheap, and the blocks themselves would be easy to produce. Ages 5 and up because any younger and they probably won't understand how to use the blocks.)