I work with large format cameras. I use to repair stereo, TV, and related electronics.
Small and miniature DC motors are in use in many applications. The ratings should be printed on the motor, voltage, current, RPM and your neighbor should be able to help you pick one that will work if you need a new one.
Use your search engine of choice and search for miniature DC motor or small DC motor, the results will be much different from what I get as we are half the world away from each other.
Then search for electronic components to find replacements for bad ones. There may be a store near you. Some of the biggest electronics manufactures are in Europe.
I was given a Keystone K430. Has no batteries and I do not know what batteries go in it. Want it cheap?