Packing for 10 days in a carry-on requires a "Capsule Wardrobe" strategy and modern space-saving tools. First, choose a single color palette (e.g., navy, white, and tan) so that every top matches every bottom, allowing you to create 10+ outfits from just 3 bottoms and 5–6 tops. Second, utilize compression packing cubes; these not only organize your bag but physically zip out excess air to shrink the volume of your clothes by 30%. Third, follow the "wear one, pack two" rule for shoes: wear your bulkiest sneakers/boots on the plane and pack one pair of sandals and one pair of dressier flats. Fourth, pack travel-sized laundry detergent or "sink suds"; planning to wash socks and undergarments midway through the trip allows you to pack only 5 days' worth of those items. Finally, roll your clothes instead of folding them to prevent wrinkles and fill every "dead space" inside the bag, such as stuffing socks inside your shoes.