I've a problem with the word charity because I think that NGOs, as I prefer calling them, really do take the work of moral and social responsibilities that ought to be taken on by governments.
I don't think people understand that being poor means you have to work from dawn until dusk just to survive through the day. I think there's some notion that poor people lie about all day not doing anything.
This morning, I went to wipe my hands on a tea towel, and while I was using it, it seemed like it felt a bit light. I unfolded it and realized my daughter had cut little bits out of it to make frocks for her dolls!
If you're actually allowing your creative part to control your writing rather than a more commercial instinct or motive, then you'll find that all sorts of interesting things will bubble up to the surface.
The thing that influenced me most in relation to 'Nanny McPhee' were the Westerns I watched with my father. All the Spaghetti Westerns; all the Virginians; all the High Chaparrals. Because if you think about the form, it's a stranger from out of town.