OK, I broke down and bought a couple of these (Sprawlmart has them for something silly like 88 cents, I couldn't resist).

Dimensions are 3.5" on a side, about 5/8" tall. Poking that into the calculator, these are just under 90% larger than an Altoids tin. Two part, so you don't have to worry about hinge clearance.

I've experimentally repacked my PSK main and auxilliary tins into it, loosing only the foot or so of duct tape from the PSK (but there is still about 8' in there), a star burst, two screw eyes, a safety pin, and deleting the redundant water bag and repacked PA tabs from the PSK-aux tin. And there is still a little room.

I'm thinking about spray painting the entire thing a day-glo color with a white stripe for finding it at night. This tin feels RIGHT to me, so next time in retail's version of the Inferno, I might have to clean them out of thier supply. <img src="/images/graemlins/smile.gif" alt="" />