One of the easiest ways to keep your money in your pocket on travel days is to pack your own snacks. Of course, with security restrictions around liquids and gels this can get a bit tricky. And if you’re flying with only carry on, you don’t want a bag full of tupperware containers with no room for socks. But these five vegetarian foods travel well, you won’t risk food poisoning by leaving them unrefrigerated, and will give a hit of nutrients and energy for those long travel days.