Using packing cubes efficiently is an art form that transforms a chaotic suitcase into a modular, organized system. The first step to efficiency is categorization: dedicate specific cubes to specific clothing types—for example, one medium cube for tops, one for bottoms, and a small one for undergarments and socks. To maximize space within the cubes, the "rolling method" is superior to folding; tightly rolling clothes prevents deep wrinkles and allows you to see every item at a glance without digging. Another high-level tip is to choose cubes of different colors or sizes so you can identify the contents without opening them. You should also utilize "dead space" by using slim, tubular cubes for items like belts or chargers. For maximum efficiency, consider a "clean/dirty" double-sided cube, which has two compartments to keep soiled laundry separate from fresh clothes as your trip progresses. It is important not to overstuff the cubes, as this creates a "bulge" that makes it harder to stack them flat in your luggage. When packed correctly, the cubes should fit together like a game of Tetris, filling every corner of your suitcase and allowing you to live out of your bag without ever having to fully unpack, which is especially useful for multi-destination trips.