During your international travels, you're most likely to encounter jet lag. However, you may simply cope with it by doing some light and simple exercise, such as walking or running.

Put Your Batteries In The Fridge

As crazy as it sounds, that is exactly what it is. Put your batteries in the fridge to keep them fresh and make them last longer. Although it may appear strange, batteries can charge up to 90% when kept in a chilly environment. Try this one, and see how it does wonders. 

Pack A Packet Of Crayons 

That's another strange technique, but a packet of crayons can come in handy in an emergency while travelling. A full-sized crayon, on the other hand, may light for up to half an hour and generate an incredible amount of light, making it worth the try.