As we all know, some very intelligent people have aspergers or have been on the autism spectrum.
As one of these people, I would have liked to tell my parents to let me do what I wanted to do, and nurture the skills that I had. They fought my aspergers/add/whatever with medications. Horrible years of my life, those...
Are you or his mother musically inclined? Go buy him a 100 dollar guitar. Show him some videos on youtube. Does he like to take things apart? Take him to somewhere that used to be like radio shack. Start building something on your own and see if he jumps in. He might be a very skilled carpenter, but you will never know these things unless you provide the climate for where he can flourish.