Interesting Invention - Play-Doh

Play-doh was first manufactured to be used as a wallpaper cleaner. It was created by Noah McVicker of Cincinnati-based soap manufacturer Kutol Products.

"Play-Doh" by Larry D. Moore
© 2006 Larry D. Moore.
Creative Commons 3.0
(It was a putty made of flour, water, salt, boric acid, and mineral oil, formulated to remove soot and oily residue from wallpaper, but children at a nursery school in Cincinatti school had been using it as a modeling compound to make Christmas ornaments. McVicker's nephew, Joe McVicker, joined Kutol with the remit to save the company from bankruptcy; and saw the opportunity to completely remarket the product, and the rest, as they say, is history.

The Toy Industry Association named Play-Doh in its "Century of Toys List" in 2003.  I do hope they gave that nursery school a free supply.)