Stereoscopic images ? Try the View-master

Before the age of Wii's and I-somethings, kids were just plain happy to entertain themselves with this. 2 Identical images on a revolving disk giving the viewer an impression of depth. Basically, 3-D technology with bigger glasses !

Wikipedia says there have been about 25 models of viewers produced, and about 1.5 billion disks. Here are 2 packs of reels from my favorite heroes. Interesting thing is that lots of the disks and viewers produced for this were made in Belgium, the country in which I grew up.

Ulysse 31 reels, View Master Int., Belgium,
1981

Albator reels, GAF, Belgium,
1979

No wonder this toy got itself into the list of the U.S. toy Hall of Fame (http://www.toyhalloffame.org/) together with other best-sellers like Barbie dolls or Duncan Yo-yo's.