I either carry a fanny pack or a backpack (depending on how far I am going) to haul all of my water, food, emergency, and game cleaning supplies. I don't use a ball starter so the only things in my pockets are 4 speed loads, caps, and windicator. I like to keep them in separate pockets so that I don't have to search for them. Speed loads go in outer chest pocket (opposite of shooting shoulder) and the caps and windicator are in separate front pants pockets. Caps are in a ear plug canister that is pretty thick plastic so it keeps the noise down. I have never had any luck with the cap dispensers. They work good for #10 or #11s but I haven't found one that works good for musket caps yet.
I also use a lanyard that holds 8 calls that I attached my bino's to. So now it holds my bino's and 6 calls.