I have a manuscript titled "Zapped" from about ten years ago. It is a hypnotic method for making a spectator think he is sitting in a electric chair that the magician controls. I've seen it performed by a magician/hypnotist and it's a riot. It's 100% safe as no electricity is involved whatsoever, just the spectator's mind. A stooge is not involved, but there are methods for determining what type of spectator would work best for this effect.
If you want to build a working (but safe) electric chair I recommend Paul Osborne's HALLOWEEN ILLUSIONS book. I think it's called 'Electra, the Electric Girl' or something like that. When she is in the chair (and all but naked) she can hold light bulbs or florescent tube lights and they will light up brightly. She can also shoot lightning bolts from her fingertips. The parts needed are fairly easy to come by (a Google search and you'll have a source in less than a minute). This used to be a carnival sideshow illusion back in the day.
Osborne also just came out with another illusion book titled, STEP RIGHT UP, which contains a bunch of sideshow illusions. The live girl in a fishbowl is worth the price of the book. I s**t you not, a tiny little woman is seen swimming around inside a regular fishbowl, and in real time, you can even talk to her. Another favorite of mine is a magician who shoves his hand through a woman from behind her, then out her stomach. It's a real hand as all 4 other hands are accounted for (magician's and the girl's hands. There's a LOT more illusions in these books.
Here's the Haunted Illusions book:http://www.penguinmagic.com/p/S13473
...and here's the Step Right Up book (carnival illusions):http://www.penguinmagic.com/p/S13482
The books are a far better investment than the individual illusion plans.