Many of us already travel with our phones, laptops, and tablets but there are many other gadgets that can be crucial when traveling and essential to an enjoyable and smooth trip. One particular travel essential can be a hook-on digital weight scale, especially when pre-packing your suitcases and carry-on luggage. Without it, it is easy to overpack and then be charged for a suitcase that is too heavy. Some will come in just kilos or pounds, others come with an array of different weights suitable for multiple users and items. Other essentials may be portable batteries for in-between flights if you are traveling a long distance, and memory foam neck pillows to keep the crooks out of your neck on those long flights.