As someone who typically prefers to travel with just a carry-on bag, I've tried pretty much every packing hack to fit as much as possible into my suitcase. A glance inside will uncover shirts wound around hair tools, socks stuffed into shoes, and dresses tightly rolled into every crevice. I've become so confident in my ability to stuff a suitcase that I've typically been skeptical of packing cubes-that is, until my last Europe trip.