DIY Mosquito Coil Holder Purchase a 1'x3' piece of metal screen at your local hardware store. Cut the pieces of screen into units that are 5 inches wide and 12 inches long. Fold in half, bend the screen over itself, thereby creating a holder with two sides open. Gently reshape the metal fold to create a bit of a space or gap between the two sides so that it won't pinch the mosquito coil. Add a loop of cord or an "S" shaped piece of wire for hanging. Brilliant!