I once had to suture a deep cut on my calf (leg, not young cow) myself. I couldn't get it to stop bleeding, and butterflies wouldn't hold because of the stretching of the muscle when I walked. Fortunately I had been carrying a couple of sutures in my FAK. It ended up working out great, gave me full mobility and healed in record time.

The location of the cut made it very difficult to do - you need both hands. If it had been an inch further back, I probably couldn't have done it. Because of that I now have a skin stapler as well as sutures in my FAK. The sutures are a general purpose 3-0 monofiliment with a curved cutting (FS-1) needle.

Later on, the first question everyone had was "didn't it hurt to do that?" Well it already hurt, the suturing was minor. Cleaning it out was another story. A lot of gritting teeth and Arrrghhs. A bottle of saline solution for contact lenses would have made irragating the wound a lot easier. If you wear contacts, you should probably have that with you already. If you don't wear contacts, it's a good idea anyway. You can also use it to get dirt, bits of debris, ash from the fire out of your eyes.

There was already a link to the Cabela's skin stapler and staple remover kit. Most staplers are big, honking, hand filling things. The DS-15 in the Cabela's kit is really compact, and it beats trying to tie a not in an awkward position.