So me and my friend have been prancing each other and this is the only logical step.
Thing that crossed my mind is to make non closable window which will repeat one gif. So you can use java to do that, or C++...etc... Your gif will be in while(true) so it would never stop and i think thats it. Oh yes, set up that app will always take max screen size. You can check all of this i told you at stack overflow.