Make Hagrid lose his job.

Make Gryffindor lose points by Snape

Annoy Harry and Ron by unfair words and when they teach you a lesson just act like you are hurt....

Eat apples

Say "my father will hear about this"!

Become a death eater

Kill Dumbledore.

Fix the Vanishing Cabinet

Bully Harry Pottah

Say stuff that makes girls punch me in the face

Hate the Weasleys

Make sure that everyone knows that my father will hear about this