We had various Instamatics and Polaroids around the house when I was a kid, but I was the only one in the family who had any particular interest in the craft of photography. The first film I processed was from a camera exactly like this:
I'd scavenged the camera and a complete darkroom setup from a neighbor's trash, and with nothing but the processing notes included in the film box, I set out to teach myself how to process my own film and prints.
Maybe not the best choice for me, as medium format film (with the paper backing) is much,
much harder to load on the reel for a first-timer with no instruction whatsoever. I was probably 10-11 yrs old, and I still remember standing in the dark bathroom in tears. But, I finally managed it. (Later, I seriously injured myself cracking open one of those stupid 126 cartridges.)
I have no idea whatever became of those first murky images of Muir Woods, or the equipment that produced them. But then, my interest in photography hasn't survived the years, either.