I have the one-hour place develop the Minox film as a "short roll".
I put the loose, exposed film into a black 35mm can. They open it in
the dark box, tape a leader on it, and put it into the same cartridge
that they use for 35mm film and run it through the machine.
Then I use a 2X2 Minox transparency mount as a negative carrier and
scan the negatives on a flat bed scanner using the 35mm transparency
attachment.