Post-It Notes were introduced in 1980 but actually invented in 1968 by accident.  (Nope, Romy & Michelle didn’t invent them after all)

Here’s some fun Post-It Note facts

• Spencer Silver, a 3M scientist, created the the reusable adhesive while trying to make a super strong one.
• 3M developer, Arthur Fry, used the adhesive on his bookmark inside his song book at church. He eventually started using them at work.
• The original canary yellow color was also an accident. It just so happened to be the color of the scrap paper the scientist used to test his adhesive.
• The very first Post-It note hit stores in 1980.
• Canary yellow notes remain the biggest seller even though there are a variety of colors available.