I'm looking for advice on how other photographers are transporting Quickload and Polaroid 4x5 sheets in a backpack. Both (the Polaroid in particular) are somew hat fragile compared to standard film holders. I don't want to carry the Quicklo ad box as it takes up quite a bit of precious cargo space when you don't need 20 exposures. Has anyone found thin Rubbermaid containers which could do the job?