It's a little late for this year, but file away the idea for next October and make some money Writing Santa Letters for kids. You can split the proceeds with a charity if you like.
Have you checked out the Work At Home Mom (WAHM) web forum? I like to frequent the "Moms Who Write" folder and have found some great ideas there.
Here is a great article and compilation of resources to help you learn How to Get Paid to Blog online. If you already blog or are interested in blogging, why not find out how to get paid to blog at the same time? You can monetize your own blog or get paid to blog for national companies.