In "Twilight Zone: the movie" the 3rd story is about a little boy with extraordinary psychic powers that can make anything come true, he can wish his sister or uncle into a cartoon, he wishes another sister not to have a mouth, atc. etc.
I know all the stories in the movie are re-makes of original "Twilight Zone" TV stories. I wonder if in the original tv story, instead of going to a cartoon land, they went into a dollhouse? Does this sound familiar?