The first scene shows Drax sitting in a chair facing forward(to the right of the picture) sharpening his knives, while Groot(slightly left of the shot) now a small branch with a happy face dances in rhythm to music, its quite funny
, Drax turns around and Groot freezes, then Drax looks forward and Groot starts dancing again....
The next scene(post full credits) shows The Collector sitting in his ruined museum drinking, when Cosmos the Sapce Dog comes over and licks his face, then you hear a voice say "Why do you let him lick you like that", the camera switches to a drinking talking duck(guess who) and he blabbers on drunkingly for a while
Nothing super awesome but very funny nonetheless