Molds, epoxy, ribbon cable & LEDs

 

From a screenshot of the movie to a working and wearable homemade arc reactor. Read this post to find out how I did it. It also helped that my wife kinda looks like Pepper Potts, as well. Add a couple of Stark Expo badges and we're in.

 
Arc-Reactor-Ring-Mold.jpg
Arc-Reactor-Completed-Lit.jpg
Arc-Reactor-Fake-Windings.jpg
Arc-Reactor-Halloween-Tony-Stark.jpg