sons of anarchy birthday present ideas

hello everyone! my birthday has just passed and my best friend gave me an awesome gift. i want to get him something really good for his birthday too, but i don't know anything about this series other than the name. what sort of gift would be good for someone that loves this show?

he's rewatched it "like 5 times over"

thank you !!!

ps. if you're curious, the awesome present he got me was a british centurion 1 tank model :DD