Pack one extra change of clothes for each person in their carry-on bag. Twenty-nine million pieces of luggage are lost or delayed/misplaced every year. If your bag is one of them, having a set of clothes to change into while you are waiting for your luggage to be found is a lifesaver. (Remember, if you luggage does get lost and you have a Travel Guard plan, call for 24/7 assistance in finding your luggage).