>>4434418
Fuji's an exception to the norm because their dedicated X-mount macros aren't very good, but if you can get one very cheap secondhand it would still be fine.
Easy camera to adapt to though, so any micro-nikkor, fd 50/3.5 etc will work great.
A 12mm extension tube will be plenty to fill the frame with a 35mm neg.
I scanned for years without any actual film holder, I just used a piece of picture frame glass with sticky tape to build up a guide to slide the film through.
A LCD screen showing a blank Word document was my backlight.
Still better than any lab scan.