I am rarely far from a book, and often turn to one if I have downtime. Combining reading with eating has been a habit of mine since childhood, to the effect that I'm constantly sipping water while reading -- I'm used to the combined stimuli. While living on-campus, I often brought a book with me to the dining hall in case I found no friends to eat with, and I tended to stay long after the meal sipping coffee or hot tea, immersed in my book.
Though I do not watch much television, when I do I mute the commercials and read between the breaks -- usually my 'leisure' reading, as books in history, science, philosophy, or other such serious topics demand more attention than the commercial break period provides.
I also combine music and reading -- sometimes having music on as background accompianment, but often listening to music that corresponds to the subject at hand. For instance, while reading "Our Oriental Heritage", I listened to music from India and Japan while reading the histories of those respective nations -- and when reading one of Michael Connelly's Harry Bosch novels, I put on Bosch's favorite jazz to better immerse myself in the character's environment. Last week, while reading Augstine's "Confessions", I listened to both Benedictine chants and classical music (specifically, Beethoven), because they seemed appropriate. I enjoy combining music and literature in this way.
I sometimes combine reading and napping, but this is entirely by accident!