I bought a small fireproof safe at Target, I ran velcro strips on top and bottom to hold the packs in place (I put a velcro strip on the packs to help secure them in the plane anyway)

You can get the same safe at wal-mart, staples, office max, etc. You can get a couple of different sizes in a similar price range, and if you catch them on sale you can probably save five bucks or so.



Here is a link to one at staples. http://www.staples.com/office/suppli...s_10051_SEARCH