Seasoned travelers know that packing for a trip is much more scientific than throwing clothes in a suitcase. It helps to have some wisdom (always roll, never fold) and organizational tools (cubes, jewelry holders) in your arsenal. We've sourced some of the best packing tips from the jet set, whether your aim is to avoid additional baggage fees or get your Thanksgiving dinner through security. And because even the best packers are only as good as their luggage, we bring you the latest in bag innovation: suitcases, backpacks, laptop bags, carry-ons, and you-name-it.