Packing a suitcase seems simple … at least until you reach your destination and realize what didn’t make it inside. The list also includes less serious forgotten items like hairbrushes, socks, and pajamas. While it’s likely annoying to any traveler who left these items behind, they can at least be replaced while traveling. The 10 Items Travelers Most Often Leave Behind, According to Reddit ThreadsThis traveler didn’t forget her meds. Leave a small “essentials kit” inside your suitcase so the most forgotten items are always ready.