Easy in KDE: http://askubuntu.com/a/533392/19466

Ironically this was trivial in windows xp, but they took the ability out.

Now that you've mentioned it. That would actually be phenomenal. My background would absolutely look nicer with these GIFs

In the past on os x I've converted them to a movie and used SaveHollywood[1] to make them into a screensaver, then used the trick outlined here[2] to make that into the active desktop background. I stopped because it used quite a bit of cpu/battery. I remember doing the same trick on linux many years ago using xwinwrap on gnome.

[1] http://s.sudre.free.fr/Software/SaveHollywood/about.html

[2] https://www.reddit.com/r/osx/comments/43rrf0/pixel_art_gif_a...

For a while I used to run the Helios screensaver as a wallpaper on my desktop:

http://www.reallyslick.com/screensavers/

It runs quite happily on the root window on a multimonitor setup. But I eventually turned it off after deciding that I never saw my wallpaper much anyway, and having flickering things in the corner of the monitor was making me twitchy.

If my iPhone lock screen can use these it will be neat.

That would be magical.