Hill Street Leatherworks is the maker of finely crafted leather products — like this flask holder, for example. Completely handmade, the flask holder features contrast stitching and a matt silver collar bottom. It fits most standard flask sizes and is the classiest way we know if to sneak some hooch into an overpriced watering hole. Fill it with your favorite sipping booze, slip it in your pocket, and go. The leather will only get better with age, much like a tightly barreled whiskey.