Which accidental product innovation, discovered in 1968 by Spencer Silver at 3M, initially failed to find a use but later became one of the company's most iconic and profitable products?

Many groundbreaking inventions have transformed how companies operate and compete in the marketplace. Some innovations were developed strategically, while others emerged from surprising moments of creativity or even accidents. This trivia question focuses on a significant product innovation that revolutionized an entire industry and altered the trajectory of corporate history. Test your knowledge of transformative inventions that shaped business as we know it!

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Post-it Notes (low-tack, reusable pressure-sensitive adhesive)
Scotchgard (stain and water repellent)
Scotch Magic Tape (first transparent adhesive tape)
Thinsulate (thermal insulation material)