Finding a Mother’s Helper

So J and I talked about it recently and we think it would be really fun to host a mother’s helper in exchange for room & board.  I’ve looked through all kinds of sites for au pairs and nanny’s and it seems that all of them require this astronomical fee for all this stuff we don’t want or need.  Essentially we would like to find a female between the age of 18-26 who would like to stay with us and help out around the house, in exchange we will provide her with a private sleeping area and food.  If any one knows how one would go about advertising this, I am all ears.  Our preference would be for an international person and would like them to have some infant care experience, though it is not really necessary, since I am home all day.  Okay thats all I have today!  Hooray for week 33.