Here's a fun View-Master viewer graphic.

I have a lot of these. At least sundry models A through F (I lost interest in collecting the models when they switched from the lovely bakelite-like plastic to the bland grey plastic versions that followed (model G onward) that followed. In Europe the E model came in multiple colors, not shown here, which I'm lucky enough to have. Model Bs came in black, brown and blue with the UK version having curved eyes. I also enjoy making my own reels, so I have sundry cameras and the cutter. It's definitely a rabbit hole if you allow it to be.