I work in a tall building, so always take my bag with me when I leave my desk.
I just have this image of the building being evacuated, no time to go back to my desk, and being stuck, halfway across london, with no money, credit cards or mobile phone!
It seems a bit silly, but I do start to stress now if I am away from my desk and don't have my bag.
Anyone else made changes to their routine or just things that make you feel better?