i like the Hat idea.
regarding the skull with horns, how he can sleep on his sides !!. i guess a human with original horns (ie not from inflammation of bones) will grow looking to the normal others and to the buffalo, he will subconsciously and continuously develop extreme anger, and most likely he will be so evil and can't be merciful with others, other possible psychology route is that he will develop parapsychologocal abilities more than others.