In 2010, to promote the release of Toy Story 3, Pixar created a commercial for the USPS featuring Mr. Potato Head, Rex, Woody, Hamm (as a Mail Carrier, referencing John Ratzenberger's role as Cliff Clavin, a mailman, on Cheers), and Slinky trying to resolve their problem of what to send to Andy at college because if they send all of it, it would be too heavy. However, this commercial is non-canon with the Toy Story films.