If you ask me on my thoughts which you did not lol, I think that the beach ball is most likely fake. Reason: The beach ball can be found in the map fox river prison on the ground and the picture of it is in the same map. As for the other things like the hippo it doesn't seem too real, but it might be real after all. Reason: riding the hippo mount looks like the rio-snow/mini crab animation. The picture is very pixelated, so editing wouldn't be that hard, same for the beach ball but its more of a cut out.. Then again these are only my thoughts.