Hey thtimster,
Thanks for the tip on the larger Sucrets Can.
I am now experimenting with 2 sizes of Keen's Mustard Cans for use as a Survival Kit Container.
They can be seen here http://en.wikipedia.org/wiki/Keen's .
They are bright yellow and red in colour which is good. The top is on the small side therefore they will be a little difficult to assemble with PSK stuff, but will make a better cooking container than a flip-top altoids type.
The side seams hold water but I have not tested them over a fire yet, metal muffer tape helps seal a questionable seam.
Specially coffee and tea tins are also good small metal PSK containers.
Mike