Check out Eric Schneider’s collection of vintage keyboards and electronic toys. He even published a book back in 2010 that you can purchase at Amazon. I like to stock a few of these gadgets, namely the Panasonic Do-Re-Mi, Panasonic R-1088, and the Casio VL-1.
This is the first museum of lost organs, damned keyboards, childish synthesizers, dusty voice transformers and singing calculators. Most of them are from the 70s and 80s.