It's time to wave goodbye to those bulky inflatable or bean-filled horseshoe neck pillows. This baby does exactly the same job, without moving around or taking up so much space. The Trtl Pillow (£25) may look like a fleece scarf, but it's got built-in supports that help to keep your neck upright and supported as you sleep. When you're not using it, it folds down almost flat and slips right into your hand luggage.