What should i take on my school trip?

This Friday my schools Art Club/Photography Club is taking a field and we're going to Nashville. We live 3 1/2 hours away so we're leaving around 6:30 Friday morning and will be back later that night.
My art teacher already said that we can bring a blanket and pillow so we can sleep on the way up there, but what's some other things i can/should bring?

Here's what i have so far.
1- Pillow
2- Blanket
3- Cell Phone & Charger
4- money for lunch, and other food/anything else
5- earphones
6- little snacks for on the way there and back

Anything else you can think of?
My phone is an iPhone by the way, so i will have apps and music on it already. And my friend and her boyfriend will be coming and getting me in the morning and we will probably get breakfast on the way to the school.

That sounds good to me. You don't want to bring a lot of stuff since you'll have to carry it all day. That sounds like enough to keep you entertained. The only other things I can think of are sunglasses if it's really sunny or a jacket if there's a good chance it'll rain.

Have fun!

Camera
Notepad and pen
Small sketch book and pencils