I have two tins that I carry regularly; one is let's say "stock looking" that is for urban situations, and the other one that I carry into the wilderness that I painted the outside fluorescent orange. The orange painted wilderness-Altoids tin has one side of the outer hinged lid covered with 3M Scotch-lite (I find it useful to peel little pieces off for trail markers for night time travel, signalling, and finding it in the dark) and the bottom half I drew an improvised sundial for the sake of just having it there. Plus it works fairly well.