Old post but still relevant I think. I bought a very large cloth with reinforced bottom laundry bag from Walmart, it has a draw string opening and a shoulder strap with outside pockets that zip closed, so all my small parts go in there, swivels and spar caps. It is cheap, holds twenty of my kites and easily replaced if it wears out. I carry tails, spools, and small kites in a bag I made from a nylon pillowcase, I put a drawstring in the opening.