A little boy (maybe 5 years old) wrote to Maurice Sendak telling him how much he loved his books, his drawings, everything about him. As you might imagine, Sendak gets a lot of fan mail, but he was so moved by this one that he wrote the boy back and enclosed an original drawing, just for him.
The boy was so overjoyed when he received the drawing that he ate it, the entire thing, every last shred of pulp and ink.
His mom wrote back to the author, telling him the story. Sendak was thrilled, saying that that was the greatest compliment he had ever received.