Animate a logo for a Wordpress plugin

I have a company logo which I am using for Wordpress plugins on the repository - the Wordpress rules state they must be 128x128 and 256x256.

I would like someone to animate this logo, so need two GIFs produced that are the same, one that is 128x128 and another 256x256. They must be animated GIFs.

I don't know exactly how I want them to be animated, looking for ideas really. Something fairly subtle. Perhaps a pause and then a quick spin around the vertical axis before pausing again? Ideas welcome!