Well, the unfortunate true answer is not much. I have spent his entire life trying to get him interested in or inquisitive about anything. The thing he's good at is being a really nice guy. No big kids can pick on him because his friends will immediately come to his defense. They protect him, which gives me faith in kids which surprises me. The first thing, ever, is a sudden passion for reading Harry Potter, in large doses.

He does like camping and hiking with Boy Scouts. Other than that, everything on your suggestion list leads to nada.

I sure hope that this all will prove to be a mere developmental delay.