Hip-pocket records!
Wire-recorder reels!
More back-of-the-box cereal flexis!
Edison cylinders!
Say-it-Play-It tape cartridges!
Hip Clips! (That's partially already happened, with the 1-minute GV cutdown...)
Reel-to-reel tapes!
35mm mag stock!!!
I've already started a parody of the Edison cylinder Smile sessions! Then I found a 1971 Kenner cylinder toy jukebox that might work as well.