I have a big stash of slide film. I continue to add to it because the stuff now sells so cheaply at swap meets.
I have a big stash of 6 step Kodak e-6 chems that are still working fine, despite having slipped past their best by date.
I rarely mount them. They go into neg filer pages. Some times I scan them. Some time I project them. Some times I shoot an interneg and print the interneg to an RA-4 print.
They look so great just on a light box. Usually the images are a great capsule of a vacation I have taken.