First of all, don’t forget to pack your universal travel adapter and phone charger in your carry-on, especially if your travel documents are saved on your phone. Talking about electronic devices, we always keep our most valuable belongings in our hand luggage.On long-haul flights we take a travel pillow with us; it definitely helps us to get a few hours of sleep on the plane. We also travel with a (reusable) water bottle; airplanes are dry and the water bottles you get on the plane are too small to keep you hydrated throughout the flight.Finally, we recommend you to always pack a change of clothes in case your luggage gets lost or delayed and a small selection of toiletries.