The author said the key to easy travel days, is only using carry-ons — even when she's with her kids. Courtesy of Jamie Davis Smith. My kids and I travel frequently, and always rely on just carry-ons, even for weekslong trips. I limit what we bring, pack coordinating outfits, and make sure we share toiletries to save space. Packing cubes help maximize space, and bringing our Kindles instead of books saves even more room. I travel frequently and like to think I have packing down to a scienc...