Hmmmmmm... an Altoids tin size but open on the end...
I'm workin' on it, please stand by.
Any preference for Stainless vs. aluminum?
Stainless but would not complain if aluminum. But think those old metal Band-aid boxes (not Altoid sized). I'm thinking 3" by 5" by 1" or 1.5" (maybe 4" by 6" and 1" to 1.5" thick). The smallest side being the side that opens.