My neighbor does some craft show things - she makes like... candles and scented potpourri and whatever - and she asks for my help. I help her make some of the stuff, sometimes, but I normally do the lifting of the crates and boxes and whatever, and load the trailer for actual shows.
And then I go to some shows with her, to help setup her stand and whatnot.
I get paid by the hour for the making of the crafts.
I get paid about 200 bucks for each show that I help with.
It's not an official job, though. I don't have to help if I don't want to, and she doesn't, technically, have to pay me. But she knows that is she didn't, I wouldn't help anymore. :p