India, Aug. 15 -- I discovered packing cubes much later than most people, and honestly, I am still wondering how I managed without them. For years, packing felt like a jigsaw puzzle I could never quite solve. I would fold, roll, rearrange, sit on the suitcase, zip it shut and then inevitably need the one thing sitting right at the bottom. To make matters worse, I married a man whose suitcases, once packed, look like a work of art. Mine looked like I had packed during a mild panic attack. My first proper encounter with packing cubes came on a cruise to Sri Lanka. I was travelling on Cordelia, and every day came with a girls' trip dress code. There was a new outfit every few hours, which meant packing for the trip was less about simply carr...