Way to go curious. We were also a two income family (and I was the larger bread winner). All those are great money saving hints. Also, look for free family outings (the local art museum around here offers a free day as did the zoo at one time).

If you still find that swinging the stay at home thing is not fitting to your pocket, research online working opportunities or at home jobs. I've started both a flower business and a grants consulting business to supplement our income.