There are a few must-have travel accessories for babies that can make your trip a lot smoother. A diaper bag is a necessity when traveling with a baby, and it should be packed with all the essentials like diapers, wipes, and a change of clothes. A travel crib or playard can be a lifesaver when you need a place for your baby to sleep or play while on the go. And if you're flying with a baby, a car seat approved for air travel can be a real game-changer.