GreenYour.com

Hokey Spokes puts the glitz into safety lighting with transparent "blades" that attach to your bicycle spokes. They explain their product by saying, "as these blades spin during riding, a computer inside the blades modulates the internal LED lights so that design images and custom text appear." They come in a variety of colors and up to six blades can be placed on each wheel, though they cost $29.95 a blade. They fit almost any mountain or road bike with a wheel diameter of 24" or greater.