I read on the train(s) most days, actual paper books. We own plenty that I haven't read yet, and the extra weight doesn't bother me. I also read at lunch sometimes; it depends on whether the other person in the office is having lunch at the same time and we can chat, or if I need to run errands, or what. All together this adds up to a lot of reading time a day, which is awesome! Except...
I keep finishing books on the morning commute, or at lunch. Leaving me with nothing to read on the way home. A few times I've realized I'm close enough to the end of a book to plan and bring a new one too, but more often than not I finish a book on the morning train and am a little sad. I can entertain myself with the scenery or my phone on the way home, but reading has become enough of a habit that it feels weird to not have a book in my hands. Maybe I need to bring a safety book to the office, just in case.