During the filming of the scene where Legolas is suppose to catch Tauriel talking to Kili, there was a surprise improvisation by Orlando when the camera panned over to show him on the balcony. He was wearing a party hat and drinking champagne, and the whole crew started laughing because they weren't expecting it. <--- HA!
Ori keeping a journal in the Hobbit and in the Lord of the Rings. (It is Ori's writing in Book of Mazarbul that Gandalf reads to the Fellowship.) If you look you can see Ori writing in it, in the background when Bilbo tells Gandalf that he won't go.