What to bring to premiere?

So i just got my tickets for the midnight premiere of Harry Potter and the Deathly Hallows Part 2 and i want to know what to bring :) I have been to almost all of the premieres of harry potter and all of twilight's and a few others so i am not new to the premiere scene, some might say I am pretty experienced. Though i have been to many i already know i have to get there around 6 hours early to have good seating but i would still like to know if there is any fun stuff i could bring to do for my long cold wait? please help :) thank you :)