The Longest Packing List

What do you often forget when you pack for a trip or vacation? After several years of constantly forgetting one two or three items per trip I decided to put together a master packing list for myself. And then over the last several years I've added and detracted from this list until it fits me perfectly. What would you add to this list? What would you take away? I hope this helps you to pack in a pinch or to pack when you have plenty of time.