Fred and George Weasley show Harry the Marauder's Map that they stole from Filch's office. The map shows all of Hogwarts and the movements of every person on the premises in real-time. The map also shows all of the secret passageways around Hogwarts.
The CyberSquad is on an island and needs to visit Dr. Marbles. The group members have a map but don't know where they are on the island, so they head to the shore. Once at the shore, they use landmarks to determine where they are on the map. From there, they figure out which direction and how far to travel in order to reach the doctor.
To escape the island, the CyberSquad must reach before sunset one of the portals that Motherboard has placed on the island at random. The group uses the map to determine the distance to each portal and accounts for facts such as steep climbs and bridges being down. The kids and Digit decide to take the rapids to the bay, where they successfully reach the portal.
Inez and Digit need to get Peaches home to her family, and they use a map to help them navigate the island to the peach trees. At first, they head in the wrong direction. However, they use landmarks to find their position on the island and determine the direction they need to go in order to reach their destination.
As Max writes a letter to Roxanne admitting that he lied about going to the PowerLine conference, he accidentally finds the map that Goofy has been using for their trip. He quietly changes the route to Los Angeles instead of their fishing location.