Perpetual Motion Desk Toys

perpetual motion
Perpetual Motion is an album of classical music released in 2001. The album is unique in that none of the pieces featured on it are played on the instruments for which they were written.
Perpetual motion describes hypothetical machines that operate or produce useful work indefinitely and, more generally, hypothetical machines that produce more work or energy than they consume, whether they might operate indefinitely or not.
A state in which movement or action is or appears to be continuous and unceasing
The motion of a hypothetical machine that, once activated, would run forever unless subject to an external force or to wear
motion that continues indefinitely without any external source of energy; impossible in practice because of friction

desk toys
(Desk toy) An office toy or desk toy is a type of toy intended to sit on desks in an office environment.