Valderi, valdera, my knapsack on my back...

The friend with whom I'm traveling to Spain asked my advice on what to pack, so as a follow-up to my travel planning tips, I am now sharing my default packing list when going to a new country for 7-10 days. I like to think I travel pretty light, but I know some of you are way more hard-core than me -- your feedback is welcome. :-)

( Marjorie's Default Pack List )

So what's on your packing list? What can't you leave home without?