I use a rather old laptop PC, but I think this would work for desktop PCs, as well. On a lark, I tried putting a geometrical .gif file — the one you see above — on my PC, as the “wallpaper” for a desktop background. I didn’t think that would work, but, to my surprise, it did — rotational movement and all.

If you want to try the same thing with images from this blog, choose one that’s in a horizontal rectangle, to match the shape of a computer screen — they work better. I make these images with Stella 4d:  Polyhedron Navigator, which you can try here.