|Fairy Mary Moo Cow Cookie Castle|
|First Appeared (cartoon)||
The Fairy Mary Moo Cow Cookie Castle is a toy set that only appeared in Kidonia. It is 500 pieces not including The Fairy Mary Moo Cow Cookie Carriage.
D.W. told Arthur that he had to help built the castle. But he said the he didn't have time. D.W. then told mom that Arthur had broken his promise. Later at the park, Arthur said that it was 500 pieces not including The Fairy Mary Moo Cow Cookie Carriage.