I mostly use coffee cans.I must have 20 - 25 different boxes of one and five pound screws and nails I need to carry around with me. At this time I have them all jammed into a plastic foot locker. That works until the boxes start braking apart or if I accidentally leave the top open and it rains, then I have a mountain of mixed fasteners. Do any of you guys have any suggestions as what you use to keep the different fasteners separated and dry?