Dr Scholl (look in your pharmacy footcare section) offers a wonderful, thin blue plastic container with their blister pads (similar to moleskins). The container is slightly curved to fit in your pocket and conform to the leg shape.
I use it for my EDC; there's room for a mini sewing kit, basic first aid/pills, twine, duct tape, Xacto blade, mini-Bic, tinder, button compass, and a few other items. Ranger bands around the outside keep it securely closed and reasonably water tight. Less bulk than an Altoids tin, invisible in causal dress trouser pocket.