I'll just open by explaining what these are. Stereograms come in two varieties.
- LEFT/RIGHT. The standard one is where you have the left eye image on the left and the right eye image on the right. It's the kind where you need a stereogram viewer (high tech from the 19th century!) or, if you're more modern, you can put it on your smartphone and look at it with a Google Cardboard viewer.
- RIGHT/LEFT. (aka "crosseye"). This one puts the left eye image on the right and the right eye image on the left, so that you can try to cross your eyes until the two images match up and look 3D.
So without further ado...
Cross your eyes to view this one:
And now here's the version that needs a stereoscope or Google Cardboard:
Some people are able to relax their eyes as if they're looking into the distance until the images match up. I find it's easier on the eyes this way, but you can only do it with a smallish picture, where the centre of the pics are more or less the same distance apart as your eyes.
I have a few more, if anyone is interested. I can also generate the red/cyan version if anyone has those old-style glasses.