Tesla coil (1891), or the Henry coil (1831). The mad scientists of the day liked to generate sparks. They also used the Holtz machine and the Voss machine. These were not props, but all early stages in the development of electronics.None the less these nuts seemed to enjoy shocking each other and themselves. Let me quote Joseph Henry
"If the extreme poles of this compound arrangement be terminated by the copper handles, and these be brought in contact, holding one in each hand, a deflagration of the metal will be produced, and a thrilling sensation, scarcely supportable, felt in each arm."
Page wound a coil of copper ribbon through a series of cups filled with mercury using them as electrical connectors. One terminal of the battery was then connected to the innermost cup of mercury and the other terminal to different cups elsewhere along the length of the coil. I'll quote Wikipedia on how Page liked to shock himself with the resulting product.
Working concurrently on a similar set of coils was British experimenter William Sturgeon. Sturgeon was familiar with Page and even reprinted Page's article in his journal Annals of Electricity. Sturgeon devised coils that were adaptations of Page's instrument, where battery current flowed through one, inner, segment of a coil, and electrical shock was taken from the entire length of a coil. Page in turn developed a coil experiment with two wires, a primary and a secondary. The first was a primary coil heavy gauge copper wire wrapped around a bundle of thin iron rods. The second was a coil of fine wire wrapped around the outside of the primary coil with silk insulation in between them. Page published an account of this which he documented in a paper titled The Compound Electro-Magnet and Electrotome. In the 1840s he worked at the US patent office and he build telegraph equipment for Samuel Morse"He held a metal wand in each hand, and put these wands into the same two cups as where the battery terminals went — or any other pair of cups. When an assistant removed one of the battery terminals, stopping the current from going in the spiral, Page received a shock. He reported stronger shocks when his hands covered more of the spirals length than where direct battery current went. He even felt shocks from parts of the spiral where no direct battery current passed."
Sadly external events drove him out of science. In 1863 Union soldiers in the trashed his lab and he quit the business. Virginia had joined the Confederacy in 1861 moving the war front to northern Virginia. It's likely his property was trashed in the retreat in the spring of 1863. he never returned to science. He died 5 years later at the age of 56.