I have the opposite problem with DS8. I have to talk him into trying new things. And we're talking things he's either expressed interest in, or things I know he'd love!
He begged to play football last spring, so we signed him up. DH coached, and he had a great season... except that the last moment of the last game he fumbled the ball.
Me: Honey, what do you want to do this fall?
DS: Nothing.
Me: You usually do soccer. Do you want to do soccer?
DS: No.
Me: Why not?
DS: I just don't want to.
Me: OK. Well, it looks like the parks dept. has a basketball program in the fall. You usually play in the winter, but you could play in the fall, too, if you want.
DS: No.
Me: What about football?
DS: No.
Me: Why?
DS: Because I dropped the ball. I didn't like that.
Me: Everybody drops the ball, sweetheart! You had so much fun the rest of the season.
DS:
No, I don't want to play anymore.
Me: Fine, but you're doing something. Swimming? Gymnastics? You loved both of those this summer, and you are really good at them.
DS: Fine, I'll do swim classes.
Me: And what about gymnastics? I'm going to sign your brother up for gymnastics, do you want to do the trampoline class again?
DS: No! No gymnastics.