 Billy Boyd (I) (qv) and Dominic Monaghan (qv) spent so much time  up the tree (TreeBeard) during the making of the the film that they  spent their time between takes writing a screenplay. Additionally,  it was so difficult to get up and down to their "perches" that they  were left there during breaks while the rest of the crew went off to  eat, though someone was kind enough to pass theirs up to them.