— Compression storage bags so packed clothes take up less room. No vacuum needed for Roomier Life Roll-Up Space Saver Bags, $16 on Amazon: The air is expelled through an opening when they're rolled up.
— Packing cubes and ultralight nylon packing bags for organizing. Flight 001's Spacepak bags, $42 and up, have dual compartments to separate dirty and clean clothes, and also have air vents for compression.
— Hand-held scale for weighing bags.
— Colorful luggage tags.
— Luggage. For inexpensive and serviceable, Target and Costco; sturdy and sensible, L.L. Bean; stylish, upscale and durable, Tumi. For organized hipsters, the $220 Nomatic backpack/duffel bag. For day bags, Bagallini, LeSportsac and REI's $33 compressible Sea To Summit Ultra-Sil Daypack. For high-tech, Bluesmart smart luggage includes a built-in weight scale, a GPS tracking device, a battery to charge a phone and laptop, and autolock activated by cellphone.