What's some good music to put on my ipod?

I'm goin on a field trip for school that's got an 8 hour bus drive. My friends and I want a good playlist for the road. We listen to all genres pretty much, some artists we like are: As Blood Runs Black, The Agonist, Architects, Aesop Rock, MF Doom, DJ Tiesto, DJ Khaled, Ice Nine Kills, Josh Ritter, Damien Rice, etc. so if anyone knows any artists/songs that aren't too mainstream, and are definately please comment! (: