Our MG has just (as in the last 2 weeks!) evolved into a "playgroup" one of the mums found a local community house which has its own run "playgroups" but we just book it for wed afternoons.
It costs us $10 a term, paid upfront, was told this is just for insurance purposes.
they have a gold coin donation box for tea/coffee but we have brought a box with all our own supplies so not applicable to us.
we have full use of the house with changetables and portacots in the 2 bedrooms (all with baby monitors) and the play area and outdoors (all undercover and fake grass () )
all chocka block with toys, another room is full of craft supplies which we have been told to help ourselves to, but the kids arent yet at the "crafty" age/stage.
there is also baby mats with mobiles set up for the younger ones, kiddies tables and chairs, full kitchen facilities etc. lots of comfy cushions and couches and baby gates to keep the kids out the kitchen and the office area (where all the information and dvd player etc is)

like I said we have only just started doing this, the kids are all 15+ months now, so walking etc, before that we hired a local hall at $9 each a term. and that had nothing but basic amenities.