Shoot Lasers Ghostbusters-Style

Send the Stay Puft Marshmallow Man back to the world of s'mores and hot cocoa this Halloween.

This complete Ghostbusters costume from Instructables user Depot Devoid is like the real-life movie prop. You can shoot "laser" particle beams at ghosts with the Proton Pack, and capture them with the Muon Ghost Trap. There's even a set of Ecto Goggles to complete the outfit.

The basic controls of the Proton Pack are controlled via an Arduino, creating flashing and fading lights. Though non-functional, these gadgets look like the real deal. 

Click through to Instructables to build-it-yourself.