I find myself sometimes bored on airplane flights and unable to write any more reports or read any more serious books. So, I admit it, I sometimes spend time on just fun fiction. I recently read The Player of Games by Iain M. Banks on a long flight. It was fun and I recommend it to people who enjoy science fiction writing. (The surprise wasn’t a big surprise at all, but it was rewarding, nonetheless.)
But I do try to keep up with my history, philosophy, and political economy, too. (I recently got several histories of India, and will try to work through those, as well as some more works on jurisprudence and legal and political theory.)