|Fairy Mary Moo Cow Cookie Castle|
|First Appeared (cartoon)||
The Fairy Mary Moo Cow Cookie Castle is an edible toy set that appears in "Kidonia."
D.W. tells Arthur that he has to help build the castle. Arthur responds that he doesn't have time. D.W. then tells Jane that Arthur has broken his promise. Later, at the park, Arthur says that the set contains 500 pieces, not including yhe Fairy Cookie Carriage.