Well I got busy at work today and did not get a chance to go "can" shopping at the supermarket.
I did have to move away from the fanny pack idea and go to a small, narrow backpack of about 14L capacity as there is just too much stuff to put it it.
My personal pocket shelter kit has 2 cans in it. An AMK Bivy and a Heatsheet are crammed into a Hershey's Chocolate Syrup can (284mL), with some thin nylon cord, a razor blade, and some paper matches, then the plastic top is put on. This can is then wrapped in thin nylon cord, brass snare wire and paracord, secured with electrical tape. This increases the can diameter so now it is a tight fit into a stainless steel can that I found at the dollar store, this can has a lid which is sealed on with electrical tape. So you end up with your shelter supplies contained within 2 small but functional billy cans.
Going to go open some pineapple now to check out the interior of the can!
Later, Mike