[jennyjuniper]

If you have a bicycle, how about approaching businesses as a bike courier? I don't know whether your age will matter (regarding insurance I mean) but it doesn't hurt to ask. Also depending whether it's of interest to you approach small businesses or artisand who may have odd jobs, although I wouldn't think the pay would be that great. Still it's better than nothing.
Also what about supermarkets, shelf filling. I know they employ a lot of young or retired people to do this kind of work, usually in the evenings. Good Luck.