I need to earn a bit of extra cash by May 2nd, about �100 - �200? Can't do part-time job. Any suggestions?

I can't do a part-time job as I have a 9 month old son that I look after full time. My son is being christened on May 4th and I'm taking him to Devon for a few days on May 5th. Would really like to earn a bit of extra cash by then so I know we can have a really good time on holiday and also get him something nice to wear for his christening and get him a nice cake. Please help.