Quoted from gibsonrd:y
I didn't even think of a pinduino, I have one in my x-men, and it is awesome! My original (or not original) idea was to have the sword only light when a mode or multiball started, so that the sword would glow blue like in the movie when orcs come around. I believe a pinduino would do that if I programmed it correctly, right?
This is by far the best possible choice. The Pinduino is already voltage appropriate, and can be controlled from flashers, which will make it far more interactive. Good luck!