Two decades ago, toy inventor Ron Dubren heard giggles coming from a playground. It was a bunch of kids tickling one other. Inspired, Dubren created Tickles the Chimp. Tickles didn’t make it very far, but after Tyco Preschool combined Dubren’s invention with a Sesame Street licensing deal, the toy became Tickle Me Elmo—so popular that the million units Tyco shipped to stores that December scarcely touched demand.
Kacy Burdette for Adweek