I like Oma's idea. I think that the beauty of it is that it doesn't put the people you're trying to get to come in into a position of vulnerability before they start. I know that's not what you're wanting to do... I'm not explaining it well... What I mean is that if people are a bit scared of the whole idea of 'church' or 'religion' then they might well feel doubly scared about going to see a member of the clergy with their 'issues' or problems... (they might feel that it would be used as an opportunity to preach at them about where they've gone wrong, rather than to help, iyswim), whereas the people going into Oma's shop are in a position of relative strength - they feel as if they are the ones doing the helping, rather than asking for help.
I don't know... Now that I've written this down, I can see the flaws in what I am saying. I know that people, say, in hospital open up to chaplains in useful ways even if they are not normally church-goers. But it's about getting people through your door, isn't it? I would try maybe a cafe or maybe a book swap type thing (sorry Nickel... don't want to put you out of business 
) to get the people in first. But, who knows... maybe people would come if you could offer something that they thought would be useful. (In the current climate, debt counselling would be really useful, I'd have thought.) Any possibility of doing something in partnership with other groups locally (CAB, any local charities, etc.)?
Good luck!
Can I ask, on a different subject, if anyone has any experience of 'tween' (hate that term, but hey ho... will use it as shorthand) Bibles? Was thinking of getting one for dd2 (who's 10) for her confirmation... I've been looking at the IShine Tween Bible and the Kids' Life Application Bible... Any knowledge of either of these? Mary? (I think your dd is a year older then my dd2, isn't she?) I want a 'proper' Bible, not a 'children's Bible' kind of thing (with just a collection of the obvious stories). Oh, and I am of a (very) liberal persuasion, so anything that suggests that gay people/single mothers/divorcees/whatever will burn in Hell would not be my style. (Not sure if such a thing exists - would like to hope it doesn't, but (a) I have spent some time in the US, and (b) I did see something on Amazon that rang some alarm bells...)