Architects and engineers have been using "stick files" for years - like 100 or more.  A drill, a couple of bolts, and two sticks a little longer than the drawing or map is wide.  While "boxes" or begs from the wall are nice, my favorite was to use two file cabinets set apart so maps or drawings hung between with sticks on top of cabinets.

But it's good to be reminded of classic solutions for today's challenges.  I happen to like folded to near file size and I keep all of my camping and bwca "paper" - books and an manuals and such - in a plastic tote that always goes with me north.