The Box
You will need a box to house this project. Some people use an old milk crate. You could also use a plastic tote and put own holes in it where they are needed. Set the milk crate on its side. Place a flashlight through one of the holes so that the light shines downward. Place cardboard under where the flashlight will shine. Cut a hole in the cardboard at this spot and insert a telescope eyepiece, facing down, so the light from the flashlight will shine through the eyepiece.
The Reader
Tape together two empty CD cases. Make two stacks of 3.5-inch floppy disks on top of the cardboard inside the crate to achieve the appropriate height for focus; when the microfilm reader is in use, you can add or remove floppies to adjust the focus. Set the stacks of floppies about 3 inches apart, then straddle the CD cases on top of them, above the space between them. This space should be over the telescope eyepiece.
The Film
Slide the film over a piece of rifle cleaning rod placed in the back of the milk crate behind the CD covers. Manually feed the film through the two CD covers and take it up on top of the milk crate. Use two pieces of round cardboard taped to a film canister for this. The images on the film will be projected through the CD covers and through the telescope eyepiece.
Finishing
Place something heavy like a slab of marble in the crate to keep it from toppling over. Place the crate over a tabletop or other surface to display the images from the film on the surface. To project them onto a wall, turn the crate, making sure that the items in the crate will not shift. You can achieve this by securing the elements in place with tape or glue.