Over the course of the series, Ojamajo Doremi had three exclusive video released mini-cartoons/episodes. They were generally teaching episodes, focusing on certain details and what not. All three seemed to take place in either Naisho, or Motto.
Main page: Lets cooking
Poppu arrives to help and even gets to wear the pattisier outfit.
Main page: Traffic Safety
After nearly being run over, Onpu arrives and using magic she turns into a police officer in order to teach them better safety tips. However, it turns out this was all a test and if Doremi continues to ignore the rules, she will lose her witch apprentice status.
Bycicle Safety Classroom
Main page: Bycicle safety Classroom
After seeing how dangerous Pop's plans for a bycicle race is. Doremi and Momoko transform into Majo-rangers in order to stop them and teach them safety tips regarding bikes. Kimitaka is nearly injured after swerving to miss Majorika. Doremi is the only one to cast a spell in this episode. While Momoko teaches a english phrase.