Don't take toys that can roll (pencils, round toys etc) Early learning centre sell sticker books with stickers that be reused and removed from the window/tray table at the end of the flight. Spare top for you and your little one. If there are headphones provided with the entertainment system on the plane, get them to practice using them (buy from Pound store) as they won't understand the concept! Lower your standards and never underestimate the power of chocolate buttons....