I'm a youth pastor, and I got my hands on a big LED window sign no one else could get working. It can use animated GIFs as long as they fit on a pixel grid of 16x72, so the oldschool sprite love has come in handy. It's limited to one color (amber, as you can see), but I think these still turned out quite well. They are actual pixel size and I couldn't figure out an easy way to resize, so you may need to break out the bifocals.
The only one I still want to tweak is the Space Invader alien one--one space invader is not nearly as imposing as three would be.
Apologies to anyone expecting 2,594 more of these to be in this thread.