Not entirely sure, but I don't think that's an ordinary Standard 8 camera, I've an idea it uses some sort of cartridge (but NOT super 8), and won't work with just the ordinary 8mm film reel to reel. But I could be wrong, it's at least 20 years since I've handled one.
You could buy some film and make some 8mm movies. You could just put it on a shelf and admire it. I seem to recall somebody came out with "instant" 8mm movie film but I don't know if that ideas died or not. The world is awash with those old 8mm and Super 8 mm movie cameras and pretty much has no idea of what to do with them. You'd think they would be good for somethng.
Polaroid briefly flirted with instant movie film - Polavision, in the late 70s. It was horrible. They couldn't make it with a clear base so it needed a special viewer that worked with light reflected off the film, and gave a LOT less light output for a given power of lamp. I think that they never came up with a projector bright enough to use a large screen, they used gadgets like big film editing units with translucent screens instead. It died very fast, partly because the equipment was useless for anything else, and partly because video cameras got smaller, lighter, and cheaper around the same time. It was pretty much dead by 1980.
later - forgot to say that I was an educational lab technician then and they were trying VERY hard to persuade schools to buy the gear - I don't think anyone did, because that was when everyone was switching from reel-to-reel videotape to VCR, and you would have had to be mad to go for another incompatible format.