I carry a few in bullet board and a premeasured vial of powder. I make the vial out of Elderberry stem. Get a piece of stem about inch around and 6 long. Push center pith out and peel bark off, I let them dry for a while then I hollow the out somemore till I get them big enought. Then I plug the bottom with glued wooden plug. Then I make a plug for the top, you want to use a soft wood like poplar,sassafras,willow. I make them to hold 100grs of powder. These are good to carry caps too. As they stay dry. Have some 20yrs old. I carry my needles and thread in one. You can make any size you want, just get the right stem. Dilly