I'm going into jr. high this year and what im going to do is measure the inside of my locker door, then go home and cut wrapping paper. Hang it up the next day using magnets, just in case your school doesnt allow tape. :] Then, cut the back pocket of and old pair of jeans and decorate it with buttons, ribbon, etc. Then put a self-adheiseve magnet on the back and hang it up. Put pencils and scissors in it and extra things you might keep in your locker. Then hang up a cute mirror, and magnets, and anything else that makes your locker look spiffy. :D
oh yeah, and sorry if your a dude. xD