I've held onto little musical sketches that I thought could be useful, and the more time that I spend doing them for each film, then the more I have to draw on.
I like to rehearse with the actors scenes that are not in the script and will not be in the film because what we're really doing is trying to establish their character, and good acting to me is about reacting.
I have a Brazilian trainer here in New York and we do a Brazilian Butt Lift workout.