Harry potter project for english?

its on the first book. im making a collage about him and im drawing it. what things could i put on the collage from the first book. im out of ideas. it needs to be something i can draw. i already have the wand, hat, broom. hogwarts crest, gryffindor crest, lightning bold, gles, and the mirror. what else could i draw i need 3 to 4 more things