An ambituous tinker dubbed Pyrofer has equipped a Viewmaster with twin LCD screens, which project the same image at varied spacing to mimic three dimensional viewing.
"The 3D object is rendered twice with the camera in a different position each time to simulate the spacing between your eyes giving different viewing angles. Each of these seperate images is sent to each of the LCDs, one for the left eye and one for the right. Sat next to each other on the desk the two LCDs dont look very 3D."
Here's a video, which, of course, can only hint at the coolness of the project.