ok, if your up for some hard work, get a car wash round, i did it last summer and made a mint, honestly, knock on peoples doors and ask them if they'd like their cars cleaned, you gotta do a good job though, wash, dry etc, then you go to the door and say 'what time do you want me to come round next week then'. You will get at least 5 or six cars done in a day (even if it takes you 5 hours) and charge like £4 a car and you'll have yourself like 25quid for 5 hours work. Not bad, the money soon mounts up and if you do it on a saturday and a sunday, you will be able to do about 15 cars in a weekend.