Been meaning to comment on this, as our church has a great P&T group (though all mine are too old for it now!)
Its called "Playbreak" and is meant to be just that - play for the kids, break for the parents/carers. So the children are looked after in 2 groups - prewalkers in the dedicated church creche, and older children in the hall, where there are 3 areas - one for "sitting down" play, one for crafts and one for ride-ons etc. The children are looked after by the "Aunties". a group of (mainly) recently retired older women who are all CRB checked and are trained by the church in childcare. Only things mums have to do is change nappies and volunteer in one of the groups once a term as a helper.
Sometimes its just mums chatting in the church lounge, sometimes they get a speaker on some topic - occasionally someone from church but mainly others - the fire brigade come to do fire safety in the home, there's a craft demonstration/try it our session etc. The minister will come and do a Christian bit at CHristmas/Easter but its not pushed.
The church is also registered to provide something called PPP (Positive Parenting Programme) which is a Glasgow City Council initiative (I think) - which runs during playbreak so that childcare is in place. They also run Alpha once a year, again during playbreak, for the childcare, but there is really no pressure to attend. Its very friendly and there are loads of non-church mums and babies/tots there - probably more than there are church ones, I think.
We hold a Christmas Eve Crib service which loads of playbreakers come along to, and quite a few of the children feed into the church run nursery school (a proper preschool) and into other activities.
Its great - its overtly Christian, totally not "stealth", and very popular.