Legend has it the Beatles rubber ball drew inspiration from The Cyrkle’s hit “Red Rubber Ball” — a band discovered by Brian Epstein, with a name coined by John Lennon himself. Manufactured in the U.S. by Holland Hall Products, Inc., this inflatable ball turned any playground game of Four Square into a Fab Four occasion.

This 11” cardboard tube let fans “hum along” to their favorite tunes through a colored flared mouthpiece (red, the rarest of four colors). Manufactured by Louis F. Dow under an NEMS license, the idea actually came from Merrimaker Corp., which traded away broad U.S. rights in exchange for exclusive resale privileges — a deal that later spun off a “Beatles Paper Hat” promo for a Chicago soft-drink bottler.