Traveling internationally is always exciting, but it can be easy to overlook packing one of the most important travel tools: an international power adapter. You might not think about it while packing, but if you don't have a power adapter, everything you own with a plug (chances are, that's a lot of things) won't work overseas. Finding this out the hard way is frustrating and almost impossible -- and extremely expensive -- to fix once you're overseas. Look for an adapter with the following: a multi-voltage converter box, a plug for each of the countries you're visiting, and a plug from your country of origin. You'll be able to use all of your electronics as usual.