Would you mind giving a few details about your financial situation? Do you have cable TV or an expensive cell phone plan? How many times a week do you eat out? Do you regularly purchase alcohol or cigarettes? How much credit card debt do you have? What do you have around the house you can sell on Craigslist?
Most money problems can be drastically reduced by cutting out wasteful spending and changing your mindset about what you think you "need" to live.
Did I miss the mark or does this describe your situation?
Well, as peeples suggested in your other question, it seems as though your only option is to inquire at charities or ask family for this sort of thing. I'm sure your children will understand if they don't get everything they'd like.