There are loads of resources for making money online as an affiliate. You could source products from ClickBank, Commission Junction, Rakuten Marketing, Share-a-Sale, Impact Radius and many others. Plus, many of the larger companies have their own affiliate programs as well. Do your due diligence and find the right company with a relevant product or service to your audience that you can sell as an affiliate.
The stuff you can’t sell online, you could sell from your garage on the weekends. Many neighborhoods plan annual or bi-annual yard sales. If you have items to sell, this is a great time to do it as the neighborhood as a whole can bring in a lot of traffic and help you perform better than you would on your own. If that’s not possible, consider partnering up with a couple of families in a popular neighborhood.
I see a comment made by Stella including some freelance sites. This does work. I use oDesk and it’s been a big help in bringing in a little extra money. I also agree with some of the other comments that mention people should think of or view more ideas of making extra money, because it really is possible to make extra money instead of just sitting around moping about not having money to pay the bills or buy something special.