Hey there,
This is a great DIY. My angel eyes were custom made with clear rod acrylic, resistors, LEDs, and some 18 gauge wire. There are a bunch of websites out there that teach you how to make your own angel eyes. I think the total cost for mine where about 40-50 bucks for Blue angel eyes (Blue LEDs are more expensive than other colors for some reason) and they turned out great and are really bright.