I just let then dry and then later apply some varnish. The last time I checked, they were still holding up. There is just not enough flesh or blood present, to give you a big problem. I have also covered them with selica gel or borax, if you can still find borax. Then you have a problem with mounting them onto a board or some such thing. I don't know If I'd trust them to hold a sword but that's your call. If you have some good spurred legs, you might want to contact a local taxidermist to get some help. You can first bend the toes to where you want them and hold in place with rubber bands or wire ties. I have done turkey and pheasant. Good luck !!!
Be Safe !!!