Ah, there’s nothing quite like a truly unuseless invention. The Slink-O-Matic does one thing, and one thing only – it keeps a Slinky going indefinitely.
Created by Jim Sellers, the machine just gradually shifts said Slinky from side to side without need for such pesky annoyances as a pair of human hands or a staircase to walk down.
According to Sellers, it actually does serve one other purpose. “(The Slink-O-Matic is)…useful in determining whether one is in the northern or the southern hemisphere. Due to Coriolis forces it will “slink” from right to left in the northern hemisphere and from left to right in the southern hemisphere.”