Oooh, I really want to say how fab I think it is that you're looking at opening up the churches to the community like this. There are so few proper community spaces around in villages - and yet so, so many churches that, when you visit them (I like looking round churches), seem to be cold, and vast, with pokey corners - underused and undervalued with sad little boxes tucked away in corners asking for 10p donations and this real sense of being a bit lost apart from on service days. (hope you don't think I'm being derogatory about churches here, btw - not my intention at all, and know there are loads out there that are nothing like this).
Anyway, wondering if your community would be too small to set up something like a cafe? Just thinking along the lines of All Saint's cafe in Hereford, which is imo brilliant to visit (wonderful for children, too) and a massive success story in lots of ways. I'd give you more info, but they're obviously working on their website, as it looks to be half-completed at the moment. Anyway, it's a church that runs a cafe with gorgeous fresh food, and has had fantastic write-ups in lots of national papers etc. It gets visited by tourists and the locals too, no mean feat, really!
I guess it might have to be a town church to work though - but I know that at All Saints they throw the church open for all sorts of other meetings and events, so might be worthwhile having a nose around it if you're ever in the area.
Thinking of suggestions, though - could you produce something like a church 'treasure' trail day for children? You know, things like 'what animal is carved on the font at the back of the church', and 'what is hanging from x, and what does it mean'. Maybe start with a treasure hunt day with prizes in association with a local primary school? Then, the idea could be recycled for visitors with children? You could do it on one photocopied sheet, charge a small amount, but the big thing would be getting people to look around, and letting children see a church as 'their' building, too.
For adults, how about a reading group? Or could you do something in association with a local library - there are loads of events/exhibitions that go around our local libraries, and a church would be a fab space for them in villages without a library building - same goes for bookreading/colouring to toddlers - does your local library organise any - and if they do, could they hold some in the church? Could you run second-hand book fairs, or something like that?
If you're going to involve the whole parish, how about asking them what evening classes they would like to attend. Dh teaches 'beginners spanish' and is massively oversubscribed - he teaches several people from our village, but they all have to travel out to a village hall elsewhere because there's nowhere to teach the class here (this is run by adult ed, but am sure you'd be able run a course like that independently). What about things like bookbinding/circus skills/creative writing courses? Poetry readings? Or historically themed things - I'm not a massive fan of these myself, but have seen 'tudor days' and so on held in churches where everyone dresses up, madrigals sung, local history societies giving shortish thingies about how the village has changed etc. But could you get the pcc to dress up in tights and ruffles.......
Anyway - Good Luck! Have never been a member of a pcc myself, but parents are, and keep seeing them come back from meetings looking gloomy about opposition to any change whatsoever. Our local church is very 'high', and not at all child friendly (not even a family service once a month) but if it did child-friendly things I'd actually be able to go once in a while, which would be nice, so am wishing you lots of luck on opening them up to the community