Marauder’s Map

In the credits of Harry Potter and the Prisoner of Azkaban, the producers placed a naughty Easter egg in the Marauder’s Map. In one scene, two sets of footprints can be seen in the bottom left corner representing two people either having sex or making out. Also, when the Map is opened for the first time, the name 'Newt Scamander' can be seen. Scamander wrote the book “Fantastic Beasts and Where To Find Them” that is mandatory reading at Hogwarts, but he isn't a teacher there. Scamander eventually got his own movie with “Fantastic Beasts and Where to Find Them”, where it is revealed that he is friends with Albus Dumbledore, so in 'Harry Potter and the Prisoner of Azkaban', he may be simply visiting.