well my best pranks are writing don't write here on the school whiteboard the teachers get confused easily

and putting a squeaky toy behind my teach's desk drawer so when he closes it the squeaky toy squeaks(obviusly) he still hasn't found out what it is and that was a whole year ago

also: if you take the little thing that makes the sound in those little cards that you get for birthdays that make a sound when you open them put it in the creak of a door so that whenever someone opens the door they will hear the sound