Gutter cleaning. You make a lot of money because most people really don't want to do it but know they should. Get yourself a 22 ft ladder - borrow it; someone you know has to have one. Don't charge per hourly rate, charge a flat rate for a house. If it is a medium sized house charge like $75, a giant house charge $100-$125. Sounds crazy, but it will come out ot like $25/hr and people will actually pay it. Start with family friends and get the word of mouth going.
Option B: install Christmas lights. People pay a bunch for that too.