Life is a solo trip, but you'll have lots of visitors

My time here in London is nearly over :( ...so I was thinking what are the 6 most important things to carry when you're traveling ?
My top 6 travel Must-Haves are:
-my iPod
-a long and cosy scarf
-a fashion magazine
-my appointment calender ( I can't go anywhere without it ! )
-some stunning sunglasses
-my favorite perfume ( at the moment Jil by Jil Sander )

What are you carrying while traveling ?