I've always kind of wondered what happened to these crowns after the Pevensies went back through the wardrobe. Did they appear back in Cair Paravel? Did they just vanish? Did they get transported to Aslan's Country? I don't know. :)
Or LOTR, Hunger Games, and the Hobbit. Narnia, LOTR, The Hunger Games, and The Hobbit are like the best books/movies EVER (the only thing is that they don't follow the books with the movies sometimes :/)!!!