The View-Master, a classic American toy since 1939, uses stereoscopy to present 3D images. Hacker Consortium user tuttle thought that he could do the same thing with modern technology, and so replaced the internal components of one with tiny digital screens:
Long gone are the days of light shining through celluloid images on a disk… Long gone! Why this little feller here has Two, count them, 2 Colby 1.5 inch digital key chain picture frames lined up with each lens to create a digital stereoscope. Wait there’s more don’t go. What more you ask? Well this little device actually comes pretty damn close to doing stereoscope really well. It even surprised me!
At the link, you can view more images of the mod. tuttle promises to provide instructions at Instructables soon.
http://www.hackerconsortium.com/blog/?p=427 via technabob
Previously: Making View-Master Scenes