Cork roll (adheres to the walls!! For those of us who have brick and concrete...This is a great idea! Put up a cork roll, cover with fadeless paper or fabric and now you can display student work with pushpins! :-)
My husband and I both have a pretty high dislike for drywall (specifically finishing it)... I'm always looking for awesome ideas to overcome the need to finish it. I <3 cork walls, although, I think I'd want ours less cluttered :D