Packing for a week-long trip in 2026 centers on the "Rule of 3" and modular versatility to avoid checked bag fees. For a standard 7-day itinerary, you should pack three pairs of shoes (comfortable walkers, one dressier pair, and flip-flops/sandals), three bottoms (jeans, shorts, or skirts), and enough tops to rotate. A core strategy is to pack 8 sets of underwear and socks—one for each day plus a spare—and two sets of sleepwear. To maximize space, use compression packing cubes, which can reduce clothing volume by up to 30%. Don't forget a "Tech Pouch" containing a universal power adapter, a high-capacity power bank (crucial for 2026 digital nomadic life), and an extra-long charging cable. Your toiletry kit should be 3-1-1 compliant for carry-ons, featuring multi-use items like a BB cream with SPF or a 3-in-1 moisturizer. Finally, always include a small "Personal Pharmacy" with pain relievers, digestive aids, and any prescription medications to avoid expensive foreign pharmacy visits.