Which WWII product packaging innovation became so iconic that soldiers nicknamed it and it later influenced civilian product design?

Throughout military history, product branding and packaging has played a significant role in troop morale and home front support. From K-rations to specialized equipment, military product packaging has evolved dramatically while balancing practicality with psychological impact. Test your knowledge about an iconic military product package that became part of popular culture during a major global conflict.

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

The 'C-Ration' brown cardboard box with its distinctive waterproof wax coating
The 'P-38' can opener included with canned rations that soldiers often wore as a good luck charm
The 'Zippo' lighter with windproof design and distinctive rectangular metal case
The 'SPAM' key-opened tin that became a staple in Pacific theater operations