A complete change of clothes to put on after the shooting is done - rain jacket, golf umbrella, shower cap to put over your gun, golf towels to wipe off mag bodies, mag brush to clean out mags - some extra mags in case your mag goes Sword in the Stone upon being dropped and you're not convinced it's going to run. A trash bag to keep your bag in while you're shooting - though they have those covered shelters that should keep our gear pretty dry. A trash bag to put all your wet clothes in for the ride home.