Perpetual motion machine
Three perpetual motion machines were among the exhibits of the Jenny Everywhere Museum in the Strange and Wonderful House. (PROSE: Our Strange and Wonderful House: The Jenny Everywhere Museum)
The Artifectors of the Laboratory of the Strange and Wonderful House also once tasked themselves with creating a Perpetual Motion Machine as a dare. The first prototype seemed functional, but exploded in the face of lead Artifector Agrontus when he tried to solemnly switch it on, leading to the appointment of Gravitcher, whose first duty as a new leader was to preside over the cremation of what few remains of Agrontus could be gathered. However, now being confident that the idea could work in theory, the Artifectors continued studying various ways to implement it without blowing themselves up like Agrontus, such as running a network of wires around the House, “the first time in many years that any of them had seen any part of the House except for their own exclusive corner of it”, and creating a number of devices intended to siphon power from the House's network, one of which was later repurposed into a tea kettle. Eventually, they made it work at the cost of having to create a whole new tower and a permanent lightning storm. The machine had no other function than to go “ping-whoomp” every eight minutes, but was wisely left alone. (PROSE: Our Strange and Wonderful House: The Lab: The Perpetual Motion Machine (Part 1), The Lab: The Perpetual Motion Machine (Part 2))
A broken “Carnot-engine” perpetual motion machine was one of the items accumulated in the closet of Jenny's apartment in one universe. When she and Kim went through the closet to sort its contents, they found it again. Jenny reflected that she could repair it if she found the right parts, and they set it aside to use it as a birthday present for Professor Awesome. (PROSE: Cleaning Day)