Mickey Mouse Clock
This easter egg can be seen in all versions of the movie.
Shortly after Buzz arrives in Andy’s room and starts to impress the other toys with his gadgets, Woody taunts Buzz stating that he can’t fly and that if he can he should prove it.
In the scene before Buzz jumps off the bed to fly you can see a large, blue, wristwatch wall clock with Mickey Mouse as it’s background image. Mickey’s hands are also used as the hour and minute hand.
After that scene you can see Mickey for a final time very briefly after Buzz jumps off the bed, as the clock is right above him.