A failed attempt to create a super-strong adhesive accidentally results in a weak, reusable one—leading to the unlikely invention of the Post-it Note, which goes on to become one of the world’s most recognizable tools for work and creativity.
A naval engineer’s failed attempt to stabilize sensitive ship equipment accidentally sends a spring tumbling down a shelf, sparking the creation of the Slinky, a simple misfire that bounces its way into becoming one of the most beloved toys of all time.