Hi, there are customer service jobs that you can do from home. You are the 'contact' person for a company. You need a computer and phone and possibly a fax. Someone has an issue or question, they ring a number or use the computer to contact the company---- they ring or contact YOU via computer and you help them and then report back to the company.
Online teaching is also quite big these days. A good friend of mine was a math teacher before kids. She now works for an online university as a 'helper'----- when the students have issues with their work, they contact her. (did you know that college kids now do their math homework on computer??? Man, that makes me feel old). Some actually teach the courses.
If you write, there are people that pay writers to research and write for the.
Check out monster Job and also Craig's list jobs and put work from home in. You'll see quite a bit of good ideas.
good luck---
you can sell things online although there are new regualations coming in regarding it, taxing etc but still there is eBay , Amazon, Craigslist...find a product that would be popular especially near Holidays like Easter and Christmas , unusual birthday gifts, and of course collectables.