Tell your kids that you are buying them a helically-wound pre-compressed spring and they’ll likely look at you funny. Tell them that you are buying them a Slinky and they will thank you for selecting such a cool toy. Slinky is a classic toy that was originally invented in early 1940s. It can perform tricks like walking down a flight of stairs on its own or appearing to float above ground after it has been dropped. trick is in momentum and optical illusion-inducing oscillations that have made Slinky one of most sought-after toys in modern times. Order one today and your youngsters will thank you. Order two and they’ll conduct epic slinky races down your stairs that will enthrall kids and adults alike!