A packing tip.....if you find that your luggage (be it suitcase or duffel) is not quite full enough and things might slip and slide and get wrinkled.....take along your bed pillow. It can be squished down on the way home to make room for purchases....it weighs next to nothing....and it gives you a little of home's comfort. My DH travels a lot and hates hotel pillows so he started this, but I found it was great even for me who isn't picky about pillows....because it can expand or squish to fit the leftover room. On the one occasion that we bought so much stuff on vacation that both pillows wouldn't fit no matter how hard we squished....I removed my pillow case and left the pillow at the hotel. Mind you it was a $5-6 pillow, not one of those down pillows that cost more than the bed, lol.
Make it a Disney pillowcase and you've got some extra magic in your suitcase!