Help!!It's urgent...How to decorate the camp ? Run out of ideas.?

Question:Hey everyone.We will be having camping in the SCHOOL soon.Didn't get the permission to have camp outside.So,we really want to make the camp less lousy.Decorating is one way because it will not be not dull.I am in charge of decorating the hall which is also the girl's dorm for that few days.But how,any idea?Using what ? Polistrene ? It's just an ordinary dull hall.Please help..

Answers:
Get some fake(or just potted) plants and place them around the hall to make it more *woodsy*. Bring in a CD player and play a nature CD in the background. Cover any windows with paper or blankets. If you REALLY want to make it seem like outdoors, sprinkle dirt on the floor. Also, set up the tents indoors!