Numerous Easter Eggs appear throughout the series. Some of them are listed below, along with the name of the episode in which they appeared.
Note: This list is incomplete. If you spot an Easter egg that is not listed here, please screenshot it and upload the image to this wiki, then add it to one of the galleries below. Please include the name of the episode it appeared in if possible.
Numerous Dilly Sez Posters have appeared throughout the series, as well as vandalism spelling Dilly, portraits, and even products with the prefix "Dil", such as Dilvac. They are Easter Eggs slipped into various scenes by series creator John R. Dilworth. They generally give simple suggestions such as "Wash your hands", "Read a book", "Don't smoke", etc.
Some examples of these are listed below, along with the name of the episode in which they appeared.