Feel less gross with an amenities kit
We recommend: Ursa Major Traveler's Skin Care Kit, $40.00
Being confined to coach feels only somewhat less disgusting than crawling through that sewage pipe in The Shawshank Redemption. The low humidity conditions of air travel, which tend to dry out your skin, don't help. You can seriously boost your comfort level with this TSA-friendly kit, which includes face wash, shave cream, face balm, and face wipes. They're even better than those weird hot towels they give out in first class.
Stake out a middle seat when you're traveling with a friend
Whether you're a window seat person or an aisle seat person, we can all agree that there is no such thing as a middle seat person. However, when traveling with a friend, one of you has to settle, right? Wrong. It's actually smarter for you to book the window and aisles seats, leaving the middle open. Best case scenario, no one ever claims it, and you have a ton more room. Worst case, you simply explain that you and your friend are together and want to sit next to each other. Works every time, probably.