Oh I just had another thought (actually, thanks AnnaChas for this thought) but some of the cinemas have 'babes in arms' showings on thursday mornings. Every now and then we could get out and see a film . It doesn't really matter if our bubs cry because that is what this session is for. It might be too expensive for everyone to do every week, but every now and then would be nice.

EDIT: Here is the website for the Breathing Space Cafe http://www.breathingspacecafe.com.au/
It is on the St Lucia side of the Indooroopilly train station, and there is plenty of parking.