Which of these famous retail brands began as a military supplier during WWII and later became a household consumer product based on its battlefield innovation?

Throughout history, military campaigns and famous battles have inspired numerous retail products and brand innovations. Some companies leveraged wartime popularity into lasting commercial success, while others created specialized equipment that later became mainstream consumer products. This trivia question explores how a famous military-focused retail innovation transformed from battlefield necessity to household name.

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Jeep (Willys-Overland Motors)
Ray-Ban (Bausch & Lomb)
Tupperware (Earl Tupper's Company)
Zippo (George G. Blaisdell's Company)