Saw out a 3/4 wide chunk of deer antler about inch and a half long. Drill a hole halfway thru just large enough to get your arrow shaft in....glob some 2 part epoxy down the hole and shove the shaft down in her. Be sure to wrap the arrow shaft for 2-3 inches behind the head with some sinew to toughen it up. I broke my first few off just behind the blunt until I learned to strengthen 'em with the sinew.
Crude, but effective.