Bell & Howell 16mm Sound Projector, Slide Strip Projector
Record Player, Eraser Cleaner, Sea Monkeys
One of these reel-to-reel videotape models might have been the one used to watch educational TV re-runs c.1976. They messed up feeding tape on occassion.
Transparency Overhead Projector, Opaque Projector, similar to the big tan tank model they hauled into class one day to display a book or magazine on the screen.
Pencil Sharpener