Besides normal shooting accouterments (caps, patches, starter, measure, etc) I keep a patch worm, ball pulling attachment (never used TYVM), nipple pick, nipple wrench, spare nipple - basically what you might need on a walk or a hunt. Probably a tinder/firestarting tin as well, plug of tobacco. Wouldn't surprise me if the typical buckskinner often carried more than one bag, depending on the length of the walk and where he was headed - one for shooting-related stuff and another for everyday stuff you might otherwise keep in your pockets.