Nazis invented the blow-up doll
"The project was meant to "counterbalance" the sexual desires of German troops and was considered "more secret than top secret". Borghild (the name of the doll) aimed to reflect the beauty-ideal of the Nazis: white skin, fair hair and blue eyes."
http://www.buzzfeed.com/daves4/20-things-you-never-knew-about-popular-inventions