There are a lot of fun projects you can do with stepper motors salvaged ... which won’t do anything to drive the motor. Others have a case ground wire. Steppers have either 4, 5, 6, or 8 drive ...

Naturally, this is the optimal case, and there are a wide number of different stepper motor configurations in terms of coil count, types of rotors and internal wiring of the coils, as well as ...