The history of the Slink is pretty interesting. Its origin: "In 1943, Richard James, a naval mechanical engineer stationed at the William Cramp and Sons shipya

The history of the Slink is pretty interesting. Its origin: "In 1943, Richard James, a naval mechanical engineer stationed at the William Cramp and Sons shipyards in Philadelphia, was developing springs that could support and stabilize sensitive instruments aboard ships in rough seas. James accidentally knocked one of the springs from a shelf, and watched as the spring "stepped" in a series of arcs to a stack of books, to a tabletop, and to the floor, where it re-coiled itself and stood upright." [1.] [1.] https://en.wikipedia.org/wiki/Slinky https://en.wikipedia.org/wiki/Slinky