I got mine from Home Depot. It is about 7" x 7" x 4" deep and has a screw on lid with watertight gasket. It also has four tabs on the side which are perfect for holding it to the tree with a cord. I paid $9.99 for it. You cant beat it for the price.
it's in the woods right now, but I am making a trip back to Home Depot to get some "Honey Do" items. I will check it out and get their part number. They also have two other sizes which if I recall were slightly bigger.
Was walking through my garage when I spotted an old dremel case.... Hmmmm you know at the home depot where the clearance tools are there are always ryobi or tool cases but no tools in the cases. I bet these would make great cam cases.