Here is an easy to make arrow holder that I've been using this year. Just cut a piece of wire coat hanger about 2 1/2 inches long and bend about 3/8 of an inch at a right angle. Smooth the short end with a file and file the long end flat. Slip the long (flat) end under the front of the leather bow grip. Use a small rubber band to hold the arrow against the bow. When I have an opportunity for a shot, I just pinch the rubber band off and let it fly. (I bought 500 of them for a buck at the dollar store.) After hunting season just pull the arrow holder out, leaving no marks on the bow.
Good hunting, Darryl