Million dollar idea: The Slinky
Media playback is unsupported on your device

How the Slinky became a million dollar idea

The Slinky - that magic metal coil which climbs down stairs - has been a favourite Christmas stocking-filler for over 60 years. But it was never designed to be a toy. The BBC's Aaron Heslehurst explains the twists and turns behind its creation.

Video producer: Jeremy Howell

  • 28 Jul 2017
Go to next video: Million dollar idea: The Frisbee