So, to be a real travelpro, you need to ensure that you have all the basics with you, to cover most eventualities, without actually carrying any unnecessary clutter, that leaves less space for what you really need, and in extreme circumstances, can even end up costing you extra money, should your check in luggage end up weighing more than your airline-allotted allowance. The money you save in a year or two of careful packing could end up going towards an extra day at your holiday destination!