Stereoscopic images are difficult to make and difficult to watch. You need special glasses and screens or projectors. But here in the Forum is a tutorial by Bert to produce autostereoscopic images with GIMP!
Headache pills not included, but I’ll try to land an advertisement deal with one of the Pharma Giants.

EDIT: The image is now less disturbing and the tutorial updated.

Stereoscopic images are difficult to make and difficult to watch. You need special glasses and screens or projectors. But here in the Forum is a tutorial by Bert to produce...