If you're trying to suggest having a sneaky job while you claim something off the state then I have no advice other than to stop and think about whether that's the road you really want to be going down?
If I've got the wrong end of the stick here and you're just thinking off a little financial boost, that won't be a dirty little secret, here there are various companies selling make up, underwear etc that you can become a rep for. It's not a huge amount of money but it's something you can do in your own time and can be a nice little help perhaps you can think of something like that where you are? x