Some very interesting stereograms here https://www.pakin.org/~scott/stereograms/ https://www.pakin.org/~scott/stereograms/ e.g. https://www.pakin.org/~scott/

Some very interesting stereograms here https://www.pakin.org/~scott/stereograms/ https://www.pakin.org/~scott/stereograms/ e.g. https://www.pakin.org/~scott/stereograms/caged-creature.jpg https://www.pakin.org/~scott/stereograms/caged-creature.jpg https://www.pakin.org/~scott/stereograms/straight-lines.png https://www.pakin.org/~scott/stereograms/straight-lines.png https://www.pakin.org/~scott/stereograms/number-one.jpg https://www.pakin.org/~scott/stereograms/number-one.jpg https://www.pakin.org/~scott/stereograms/spheres-cubes.jpg https://www.pakin.org/~scott/stereograms/spheres-cubes.jpg https://www.pakin.org/~scott/stereograms/camping-tent.png https://www.pakin.org/~scott/stereograms/camping-tent.png