I'm not sure if anyone has used a laser pointer to make holograms.
When I made holograms for a high school science fair (about 20 years ago), I borrowed my school's Spectra Physics 0.5mW HeNe laser and optics (lenses), and my teacher gave me a roll of special (holographic?) film, and I also was able to use the photographic dark room for processing.
My setup was very crude, all put onto a 4' x 8' plywood board on sawhorses in my grandmother's basement. The optics and film holder and object holder all were placed in separate buckets of sand to help stabilize the overall setup....
Despite the setup being crude and very susceptible to vibrations, I managed to get two decent holograms out of the deal. Granted, it took me many tried prior to the successes, but it was all I could afford at the time. It was a great learning experience to say the least.
So, it is possible to make holograms with a crude setup. I still have the holograms to prove that it can be done.