There are quite a number of visual gags at Muppetvision 3D, many play on words, others just jokes about something Muppets related but there are a number of references to the films that the Muppets have starred in and at the Stage One Company Store, which is the store that you can go into after seeing Muppetvision 3D, you will see a set of lockers with a lot of junk in them.
The lockers are a reference to a scene from the Muppets Take Manhattan film. In the film, Kermit and the gang graduate from college and decide to come to New York City to try to make it big on Broadway. As they arrive, they don't have much money and end up renting lockers at a bus station as a means to save some money on their accomodations. In the next scene, the bus lockers look like home, sweet home as the various Muppets decorate them to fit their needs. In these photos, you can see on the top row the lockers for Floyd Pepper or Janice and Miss Piggy's locker with everything pink, of course.