The Wittgenstein supercomputer reveals that he is living on one rare tube, named the "WFC 11-12-55". WFC are also the executive producer, Willard F. Carroll's initials and 11/12/55 is his birthday.
The addition of a mischievous, Brooklyn-accented rat character named Ratso seems to be a reference to Dustin Hoffman's character "Ratso" in Midnight Cowboy (1969).
The only Brave Little Toaster to not be based on a book.
When the appliances ask the Wittgenstein computer how long he has been there, he answers 4,999,450,952,312 nanoseconds. That means he's been there for one hour, 23 minutes, and 19.450952312 seconds.
According to screenwriter Willard Carroll, this is actually supposed to be the second film of the trilogy, but it was the last to be completed and released.