Which 1960s packaging innovation was initially rejected by beer companies, only to later revolutionize the beverage industry and become one of the most significant packaging changes of the 20th century?

Throughout history, certain product packaging innovations have revolutionized entire industries and changed how consumers interact with products. These packaging breakthroughs didn't just contain products—they transformed markets, solved major distribution problems, or created entirely new consumption habits. Test your knowledge of these historic packaging innovations that had far-reaching impacts beyond their humble appearances.

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The pull-tab aluminum can
The plastic six-pack ring holder
The twist-off bottle cap
The stubby beer bottle