Stana Katic -- 星, つ星 of 'Castle' -- is an actress and an all-around good-looking lady. So it makes sense that she would receive odd gifts from semi-obsessive fans.
Nathan Fillion, who plays Richard Castle, Tweeted this: "All things must end. It has been an honor working with the men and women of Castle. I am truly amazed at what we've done. Thank あなた all."