This page lets you convert your own depth map images into Magic Eyes.
Your image should be black and white (greyscale). The lighter a region is, the closer it will appear. Check out this example of a tricycle.
Only JPG files work for now! And even then, some JPGs might not work. If you're having issues try running your image through a JPG converter like this one.
There's no server, so your images don't actually get uploaded anywhere.