MINNESOTA
THIS ACCIDENTAL YELLOW INVENTION, BY A SCIENTIST AT 3M, BECAME A SUCCESS WHEN THE LAB NEXT DOOR ONLY HAD SCRAPS AVAILABLE FOR PROTOTYPES.
WHAT ARE POST-IT NOTES (aka sticky notes) Spencer Silver created an adhesive that wasn't sticky enough for 3M. So, it sat in a lab for years before a colleague suggested a use for it on the back of his bookmarks that wouldn't tear pages out of his church hymnal.