Based in Plymouth, Mich, Poof-Slinky is one of the leading manufacturers of foam sport balls in North America and maker of the world-famous Slinky , which is manufactured in Hollidaysburg, Penn. Richard James invented the Slinky in 1943. Though it was developed to be a toy, other applications for the Slinky have been discovered. The Slinky has been used as an antenna by soldiers in Vietnam, as a therapy tool and for coordination development. Other Poof-Slinky products include Buki Books, Ideal Classics, Ideal Toys, Poof Toys and Slinky Science. Poof-Slinky s toys are available at many resellers throughout the United States and Canada.