One option that I have had great results with is this, get some Kodak fine grain positve release film. The last time I bought some in 2001 it was about $15.00 for a 100 foot roll. I think that the number is of the film is 5302. You can get it in 4x5 and I think that number is 5306. I use a 35mm nikon and a 55mm micro lens but many others will work.(posted 8195 days ago)Take the negative and put it on a light box, I have done many different size negatives including glass plates with a homemade lightbox.
Load up your 35mm with some 5302, I use reloadable cassettes.
The EI of this film is very slow so I brackett and the EI is about 1.5 so I use a tripod and try a few different shutter speeds.
Develop in Dektol and you can do this with a safelight on just like paper. I develop about a minute and a half, stop and fix as for paper and you may be surprised how well the slides come out. This probalby sounds more complicated than it is, but you get beautiful slides.