What should I get my boyfriend for christmas?

We are both 13 and have been dating for 3 days now. Yes I know that isn't long at all but we were friends before we went out. He told my friends he was getting me a necklace for christmas, but I don't know what to get him! He likes Usher, Bruno Mars, and Trey Songz. He also likes the Ravens. so any ideas of what to get him? okay thanks:)