These are the 3D images I got in my Coraline Box. They came with a nifty 3D viewer; sort of like an old-world Viewmaster, but you don't need it to see the effect. These are what's called Magic-Eye or Parallel-Viewing images. Take a look at This Site to learn how to do it. It's kind of tricky.... I can do the Crossed Eyes method a lot easier. In fact, I can't actually parallel-view these images here on the computer... I can do it if I hold one of the cards up in front of my face and look at something way past it, then slide the card up into my field of vision quickly. You might want to print these images out and cut them apart - cut each posted image into three separate strips horizontally. Don't want to make them too big... apparently the eye can only handle smallish images in parallel viewing. The cards I was sent are about 6 inches wide or so.
Thanks to Mysterious Ron for letting me know these actually AREN'T made for crossed-eye viewing, as I had originally posted!! Well, they kind-of work that way, but as he said in the comments, they 're reversed - what's supposed to be far away looks close and vise verse. Weird though - the stairwell image actually looks great that way.