Suitcases fill up fast. A few kids' ebooks downloaded ahead of time stay available when the Wi-Fi drops, and they take up no room in the bag.
Before you leave, save titles for offline reading in Apple Books or the Kindle app. Bring one calm bedtime story and something they already like for waiting rooms. Wired headphones help if they listen well.
Decide when the device is for reading and when it goes away. Charge it the night before and pack a cable. Grabbing a few free titles before the trip can rescue a tired afternoon in the car or at the gate.