Buy a slide projector, I have several.I just bought a bulb for one last year.
There are a lot on E-bay, but it is best to buy a top line such as Kodak, Leitz or Rollie etc. but you have to find the best for the money. (Many of the top line have better lens, i.e. zoom lens, remote features etc.)
You can get fantastic bargains on E-bay but the -- you get what you pay for gremlin -- is starting to blossom there.It isn't the garage sale bargain bin it used to be , so you have to be careful.
For 80.00 plus or minus 20, you should be able to get a good late model plus extras, trays, bulbs etc.