When most people plan their dream holiday they always tend to leave packing their luggage for the very last minute. Science says when you are stressed out and in a hurry, you always tend to forget to pack the most essential things. And the very same people do not bother themselves with the preparation of a checklist for stuff that you need to put inside the suitcase or rucksack.
Most people always tend to completely forget about the importance of clean teeth hence they forget to pack a toothbrush. Maybe they hope to buy one when they reach their final destination or it just completely slips their minds. According to surveys the toothbrush is the No. 1 forgotten item by travelers. They only remember about this easily neglected item once they really need it.
Other essential and easily overlooked items are the power adapters for any electronic equipment you may have, travel pillows, contact lenses and sunglasses and many more.