Just guessing, but...Maybe buy a foam head at craft store. Tear newsprint or newspapers and glue them onto head by layers. Mix a bit of glue or modge podge with coffee crystals to darken glue / modge podge. Paint glue / modge podge mixture over dried newspapers to, "age" them. Let dry. Wrap some twine around him a few times, adding some tags here and there, and you're good to go.