If you plan on putting up a light show for your airsoft game, then tracers come to mind. Airsoftjunkiez got the stuff you need as the announced that they have the Acetech tracers back in stock. They come in various shapes and sizes giving you options which can give a good fit to your airsoft gun as well as kind of light output you want... "Acetech Tracers are back in stock, huge selections of Blasters & Bi Frost units."