Pixar divulged some insight into the creation of WALL-E with a list of fun facts surrounding the movie's creative process. Obviously a product of a lot of hard work, WALL-E is packed with things to keep an eye or an ear out for. Here are a few of the gems from the list:

Inspiration / Design Facts

• WALL-E stands for Waste Allocation Load Lifter-Earth class.
• Andrew Stanton got inspiration for WALL-E's eyes from playing with a pair of binoculars at a baseball game.
• The WALL-E Art department had to design the bra WALL-E finds twice. The first design did not clear legal as it was too similar to a trademarked bra design.
• There are roughly 1,000 unique props in the interior of WALL-E's truck. It took a team of five modelers and five shading artists more than a month to create them.

Hidden Items

• The following items/characters from past Pixar films can be found in WALL-E's trailer and the trash on earth:
  
  
  
  
• • Rex the dinosaur from Toy Story
  • Barbie's car from Toy Story
  • Buzz Lightyear Lunchbox from Toy Story
  • Lightning McQueen toy from Cars
  • The snow globe from the short film Knick Knack
  • The bug zapper from A Bug's Life
  • An antenna ball of Mike Wazowski from Monsters, Inc.
• The satellite stuck to WALL-E when he first leaves earth is based on the design of the original Sputnik satellite.

Sound / Score Facts

• 2400 sound files were created for WALL-E. This is more than Ben Burtt created for the original Indiana Jones trilogy. The first Star Wars film had approximately 800 sound files.
• The wind on earth is comprised of recordings of Niagara Falls.
• The normal cruising speed for WALL-E is a recording of an Army tank.
• WALL-E's compacting noise is the recording of a car being crushed at a dump.