- IBM Buckling Spring Keyboard
- IBM Wheelwriter - The IBM Wheelwriter surprisingly is equipped with a buckling spring keyboard, the same switches as the Model M. In fact, it can be set up to work on a modern computer with a keyboard controller.
- Apple Extended Keyboard II - The best Apple keyboard ever made, with Alps mechanical switches (similar, but not the same as modern Cherry).
If you're making or repurposing an old keyboard, you will need a keyboard controller to convert those electrical signals to USB input. Also, if you need a keycode converter (PS/2 to USB or AT to USB), a converter is what you need.
The Teensy microcontrollers with Atmel chips work great for this purpose. Also Arduino Micro for small keyboards/converters on the cheap.