Monsters Inc. Easter Egg - Both Airplanes

At the beginning of the movie Monsters Inc., there is a shelf with Humpty Dumpty and an airplane. That airplane is shown in the Pixar movie "Finding Nemo." It's at the part where Nemo is in the fish tank and is looking around the dentist's office. There should be a pile of toys (including Buzz Lightyear from Toy Story) and a shelf full of books. On top of the shelf is the airplane.