When a metal can is used, the peanuts stay put. A victim is placed inside a large Faraday cage which is then charged by the Van der Graaf generator. Sparks can be drawn from the cage, but the person inside feels no ill effects. Another means of producing high voltages. When the handle is turned, the ball oscillates between the terminals.
Static electricity is produced by water drops falling through metal rings.
Very susceptible to humidity effects. A large capacitor is discharged by laying a screwdriver across its terminals, producing a big spark and a loud noise. Good for waking up a sleepy class. A Leyden jar is charged and then disassembled. In the disassembled state there is no discharge.