As a Children's Ministry director (check out my Growing Kids Ministry blog), I have a LOT of props, posters, and paper-things.  I used to try to keep them in the cupboard or on book shelves, but of course they would end up wrinkled or smashed or lost.  I got two of these and some command hooks (hoping to post pictures later) and put them on one of the walls in my office.  One is for poster board and already made posters, and the other is for maps, those fold up paper props (like palm trees, birds, etc), and things like.  They are working great and look good too.  I try to put an updated list of what is in the bag so I don't have to rifle through everything.