Two enthusiastic War Stars fans made a fantastic cosplay, fighting with real-life lightsabers. The lightsabers were homemade by one green laser pointer and one blue laser pointer which provided by htpow.com, a professional laser pointer online store.
You can find the green laser pointer at:
http://www.htpow.com/green-5000mw-laser-pointer-cheap-htpow-high-power-green-laser-pointers-starry-5-in-1-focus-adjustable-p-1004.html