Which of these ubiquitous consumer products was originally developed specifically for World War II soldiers before becoming a retail marketing success story?

Throughout military history, many products developed for warfare eventually found their way into civilian markets, transforming retail landscapes and consumer habits. This phenomenon represents a fascinating intersection of military innovation and product marketing. Test your knowledge about how military necessities influenced product development that later became everyday consumer items. Understanding these transitions reveals much about retail product evolution and consumer adoption patterns.

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Duct tape (originally called 'duck tape'), created for waterproof ammunition cases
Ballpoint pens, designed for RAF pilots who needed writing instruments that worked at high altitudes
Tupperware containers, initially created to protect military radio equipment from environmental damage
Velcro fasteners, developed for quick-release parachute harnesses for paratroopers