They used to sell a device which cupped the film just right to fit on the reel and keep your hands from direct contact with the film. These were small curved sheets of metal with a lip on the edges to hold the film. Tried to find one for a friend but couldn't find any new. They came in 35mm, 127 and 120 film sizes that I know of. The 120 size is very handy and I use it routinely. Perhaps a fellow APUGer knows where to find one.