My mother was recently cataloging some very small pots from an archaeological dig. I sent her with my nice camera, a prime lens, some macro adapters, and an adapter that would let her mount the body to the eyepiece of a microscope. The detail she was able to capture with the prime and macro adapters so vastly exceeded the capabilities of the university microscope that she decided to just use the camera, which had the additional advantage of having focus stacking to compensate for the shallow depth of field.

I would expect that this setup would work pretty well for a bench microscope setup if the camera can output video and isn't too big to mount on a tabletop tripod. Rather a lot can be done with crop zoom if you can get the focal length and lighting right.