Get some heavy cardboard (furniture stores or appliance stores have plenty when they unbox their refrigerators or furniture) make two half moon shape cutouts slightly larger than your fan. Take several layers of duct tape and use it for the bottom hinge. You can also use the duct tape to make a couple of handles as well, by putting a piece of tape on each side of each piece of cardboard (4 total pieces), again in a half moon shape. Make sure you have a sizable loop for your hand to go through and you'll have a tail saver at very little expense.
