Tesla Coil.

[Clovis]

Have any of you ever played around with one of these before ? Makes you feel like Dr. Frankenstein lol. The bridge models are fun also . Jumps about one foot. And it's harmless. Tiny lightning machines, fun to watch.

View: https://youtu.be/N_7IUIbO2qY

 

[Clovis]

Then there is Jacob Ladder, there are a lot vidios on YouTube showing how to make one, out of four AA battery's.
Low voltage.