S.K.
Try the public library, Micheals and other craft stores, and Museums. Get him a sketch book to take with him everywhere. Watch any TV programs he is enjoying and point out the artistry and creativity needed to put those programs together. Get him to teach you, this will really get him excited. The craft stores always have things going on. Even Home Depot does things with kids. Don't forget to show him how many things like bar soap can be made into figures, paper plates can be made into masks. There are several learning stores around, the last one I saw was on Bloomingdale past the High School, I can't remember the light, but I think there is an Applebees in the strip parking lot, you have to turn south off bloomingdale to see the strip of shops. Wall Murals are terrific for his bedroom, fabric paints can be used on bed sheets as well as t-shirts. Make certain to Frame and display his work all around the house to he knows how proud you are of him. Don't forget the state & county fairs they always have competitions, even if he does not win, he will see his work displayed publically!