To raise funds, try begging - i know, doesn't sound particularly great, but you can make a whole lot of money from begging.

Once at school a friend of mine spent lunchtime (45 minutes) begging in one of the main hallways. He made £27!

£27 from small change in a school of about 1000 people, of which only about 500 passed him.

Now imagine how much you could make in a day on city streets.