This may be super obvious to most, but to some who are unaware, I'd like to draw attention to Pelican Cases.
Pelican Cases are a hard shell, waterproof, high impact resistant case available in all kinds of shapes and sizes. One cuts out a solid foam insert to suit whatever it's intended purpose is to be.
I've been using pelican cases for all of my outdoor pursuits for many years and have had it fall off cliffs, drop out of the canoe, and had it generally abused in all sorts of ways. I highly recommend them.
http://pelican.com/home.php
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