Which WWII military product's packaging design innovation became so iconic that it influenced post-war consumer goods packaging and is still recognized globally today?

Throughout history, military technology and equipment has been influenced by packaging, presentation, and marketing strategies. From recruitment posters to equipment branding, the military-industrial complex has utilized innovative packaging design to appeal to various stakeholders. This trivia question explores how one famous military product's packaging design contributed to its widespread adoption and recognition during a critical period in history.

This is a live public trivia poll on AIPolls.Net. Vote and see real-time results.

K-Ration boxes with their distinctive tri-compartment design
Zippo lighters with their wind-resistant, waterproof metal case
M1 Garand rifle's wooden carrying case with brass fittings
Army-issued canteen with its insulated canvas cover