Bag Clip Shocker!
It actually looks like any generic freshness clip, but with 3 watch batteries, and lots of surface area to grab between the thumb and forefinger, it delivers a pretty good zap. I tried this on my son, (who should know better), he swore and threw the whole bag on the floor. We need to find some electric soap to wash his mouth out with.
These things are realistic, and it's a good way to find out who is sneaking a few of your Doritos at work.