1. Become a web content publisher by writing for websites like eHow or Associated Content. When you write an article online, people will begin reading that article almost immediately after it hits the world wide web, earning you money today. Many of these sites offer real time statistics where you can see exactly how much you made.
2. Sell stuff on ebay. Everyone has a box of miscellaneous knick knacks in their closet or garage which they will never use again. Believe it or not, that candlestick holder or hideous vase you got for your wedding ten years ago and never used can be sold on ebay and become a treasure for someone else. Ebay will take some time to earn income, but most of the work can be done in just moments.
3. Do you have a blog? Ad some ads to your blog. Many people blog just for fun and think that only their family sees their page, but they would be wrong. Search engines pick up even personal blogs. Over time a handful of Google Adsense ad clicks could add up to be a lot of money. Google Adsense also begins to add up instantly as people click the ads.
4. If you don't have a blog, you can start one. You can either start fresh by setting up a blog through wordpress.com or blogger.com and put up some Google Adsense ads as suggested in the last step or there are several blogging services out there that will take care of advertising and pay you either a flat fee per post or a flat fee per hit on the blog. One of these services is Today.com. I recommend setting up your own blog and adding Google Adsense as you are likely to earn more money that way.
5. Sign up for café press or another drop shipping service. These places may not produce money from day one and can be time consuming however they can generate a substantial supplemental income in a short period of time if marketed properly. Drop shipping means that you sell it and someone else ships it and allows you to keep a portion of the profits.