Hey, have ya'all ever considered using one of those hard, hinged "eye-glass" cases you find in the supermarket for a PSK? I was walking through the local market the other day when one caught my eye. I just thought that it would sit in my coat pocket better that the Altoids tin because of its rounded corners, plus it seems a bit larger. I don't know how tough they are, but a few 'ranger bands' should help hold it together. Mine even comes in a pretty 'faux alligator' skin to remind me how tough I am! :-)