Great thread! Please don't cave and drink; it will not help! Back when I drank I was spending around $650 per month on wine!
How on Earth did I ever afford that? I can feel your pain, money can be a big worry. The idea of offering babysitting/daycare might be a good one if you're good with kids. My sister does medical billing P/T from home, just ten hours a week to supplement her day job. I don't know much about working from home but maybe someone will have suggestions.
To me the first step was figuring all my expenses. I set up a spreadsheet in Excel to track where my money goes. Once you know that you can set a budget. Obviously that doesn't bring in more money but it helps to track spending closely. Sometimes you can reduce utilities by setting up average billing. Maybe you can save a few bucks by trimming back cable TV a bit (if you have cable). Lots of folks save a ton of money by clipping coupons to lower the grocery bills.