Also, if you want to use gun-cleaning stuff you already own, I've found a clear, zip-close cosmetics pouch from the drug store works pretty well. I've got one full of shotgun cleaning gear, including take-down rod, that rides in a pouch on the side of my gun case. Been using it for years. If see-through isn't important, a little currency pouch from an office-supply store works about the same.

As a matter of fact, both kinds of pouchs are pretty nice for organizing/packing small gear.