Old Horse Fly Masks make great wound covers and keep the flies off your horses' legs while still allowing the air to circulate to heal the wound.
Do your horses Manes and Tails get tangled? Try rubbing them with some vegetable oil to help loosen tangles. Better than expensive detanglers.
Concerned about your horses nutrition? You don't often see Vegetable Oil listed in equestrian diet books; but, when vegetable oil is added to your horse feel, it helps lubricate for their hooves and coat; and, also add calories to the diet for the hard keepers.