In my new role I need to be in London one day a week. This means up at 4.30am to get ready, leave house at 5.15am to catch 5.45am train (I walk to the station). Then office all day and 7.30pm train home which gets me in the house at 10pm. Ideally I'd like to eat on the train there and back, but what?! Obviously not too messy or smelly. I can pick up something near the office for lunch but want to keep costs down so could do leftovers warmed up (microwave in kitchen) but then what can I have for dinner on the train home?! Any else do a long day like this? What do you eat?!!