Dumbo from Disneyland...though not a 1955/56 model, cause the ears don't move.
"Walt Disney's The Mickey Mouse Club debuted on television in 1955, featuring skits, newsreels, music, and dance. Lonnie Burr, one of the original Mouseketeers, wore this cap for a televised reunion in 1980."
Simba mask, from Julie Taymor's The Lion King musical.
Sheet music from Pinoccio!
Fantasia on laser disc!