If you are ever on a road trip or in a plane, two items will improve your experience (and Hygiene) by leaps and bounds. A pack of baby wipes, and makeup remover wipes. Being able to wipe the grease from your face and having a clean posterior are key to comfort in small enclosed spaces.
Another thing that helps a lot is foot spray to keep your socks dry.
Another thing that helps a lot is foot spray to keep your socks dry.