My erector set had plans for making a ‘shocking device’.
It used the elecric motor’s windings as the coil, a battery, a gear, and one of the holed metal straps for the ‘points’.
After a while, I took the motor coil out and put a TV Degausser in it’s place.
I made a strobe light out of the erector set, as well.
If I had just had a big enough erector set, I coulda built....
I had an erector set, too. I haven’t seen them for years. I figure the name did them in.