Backpacks keep your stuff together in an easy-to-wear and easy-to-store carry-on that you can schlep through just about any airport, train station, or taxi pickup. Life gets a little complicated when you board a plane, however, because as you're looking around for your seat and swinging your backpack off your shoulders, you're probably hitting people with it. The solution? Wear your backpack on the front of your body, like a fake pregnant belly. It will still be easy to carry, but you won't be hitting people with it and you'll be able to slip it off much more easily when the time comes to sit down and stow your stuff under the seat in front of you.