Nate is so into dinosaurs, and I just puzzle at it. I don't think we have any dinosaur books, movies, or toys. One pillow with a dinosaur on it that he ignored for most of his life. But now? Dinosaurs are it.
He talks about them all the time. If something has a dinosaur on it, he's there. He wants a dinosaur snack (?), and he claims his bed is a BIG dinosaur bed. Okay, sure.
It does help us out, quite a bit - if we want him to do / eat / wear something, we just call it a dinosaur widgit! He's there.