Which packaging innovation, invented in the 1950s, led to a revolution in consumer behavior by making products more portable and individually accessible?

In the world of inventions and discoveries, packaging innovations have dramatically altered how consumers interact with products. One particular breakthrough revolutionized an entire industry, changing not just how products were stored and transported, but fundamentally shifting consumer buying habits. This packaging innovation made products more accessible, convenient, and ultimately transformed retail landscapes worldwide. Do you know which groundbreaking packaging design sparked this consumer revolution?

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Tetra Pak aseptic packaging (allowing shelf-stable milk and juices)
Blister packaging (transparent plastic sealed to cardboard)
Aerosol spray can with valve system
Aluminum pull-tab beverage can (eliminating separate can openers)