Which famous consumer product was originally developed during WWII for military use before becoming a household retail sensation in the 1950s?

Throughout history, military innovations have transformed from specialized equipment into mainstream consumer products. Many everyday items we use originated from military research and development, later finding their way into civilian markets through strategic retail campaigns. This poll tests your knowledge about how military technology transformed into successful consumer retail products that changed shopping habits and created new retail categories.

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Teflon (non-stick coating) - originally used to protect military equipment and weapons from corrosion
Super Glue - initially developed as a clear plastic for gun sights and later discovered to have adhesive properties
Aerosol spray cans - developed for military insect repellent delivery to combat malaria in the Pacific Theater
Instant coffee - created for military rations to boost troop morale and energy in field conditions