97 Cent String Keeper
I was shopping at the local warehouse store when I noticed these containers in a bin. Obviously, they are intended for storing your toothbrush during travel, but I don't always look at items the way others do. My wife sees a toothbrush holder, I see a 97 cent string keeper!
This is such a simple idea. Fold the string and secure it with a rubber band or twist tie. Slide the string into one end and snap the other end in place. Wool silencers mash down and fit nicely. Next, use a Sharpie and write on the keeper to identify which bow the string matches. They are perfect for travel (after all, that is what they are made to do). If your serving isn't too long, you don't have to fold that part of the string at all.
Get on over to your local warehouse store and buy several. After all they're less than a dollar each. You may even want to put your toothbrush in one!