The Gif2Boot Tool will allow you to convert your favorite gifs into a bootanimation.zip which can be flashed in recovery quickly and easily. Simply download the latest version of Gif2Boot to your PC, Mac, or Linux, run the gif2boot.jar, and follow the onscreen instructions. It is that easy. There are several screensize and placement options so that you can be sure to cover the whole screen of your device with the bootanimation. Chainfire tweeted a super awesome SuperSU gif today. This would be the perfect Gif to get you started! Head to this link to download gif2boot, and this link to grab the SuperSU gif!