You might be interested in this blog post from the Guardian about why poets travel on trains http://www.guardian.co.uk/books/booksblog/2008/sep/26/poetry.trains.oriordan
It also explores some ideas around writing poetry.
Are there particular things which lend themselves to being read on shorter train journeys (mainly communting for work) or longer train journeys (for a variety of reasons). Or is reading on the train a thing of the past?
How would a reading list for reading (or listening) on the train be?
What would you include?