If you found the burning laser project we shared earlier this year entirely too pedestrian then this palm-of-the-hand laser blaster is for you.
Modifying blue lasers to light matches and pop balloons is pretty neat. Modifying blue lasers to fit in a palm-mounted brace for Iron Man style laser blasting is pretty awesome. In the above video Patrick Priebe demonstrates his build–a very portable and quite clever build that features a 1000mW laser and a back-of-the-hand battery pack. Hit up the link below for more information on the build.
Tinker Emulates Iron Man with Real-Life, Palm-Mounted Laser Weapon [Popular Science via Make]