You need this for almost anything, wherever you are. It's very difficult to copy. There are, however, many ways of getting money which don't involve spending all of your time attached to a desk. One sure method is to employ many moustaches to take up home on your body (you don't need money for these). Encourage them to hold onto crumbs and sticky bits of food, then roll down two flights of stairs at Stockwell Underground Station, and pour two cups of coffee into your lap. On a piece of cardboard write "Homles and Hunger, pleese halp". Sit down in a doorway on Oxford Street and wait for the cash to come rolling in. Often it helps to draw attention to yourself by singing. Or buy a little dog.