I have two sources of income , both that are "home" based. The first is my "real " job and I use others that are working from home. I use CAD professionals and others that help to proof read and format final documents for final submittals.
The CAD work that use requires very specific skills , the other for proof reading and formating requires very good computer skills in both Word, and other programs.
So think about what marketable skills you have , and then how to market them. There is a whole world of us who make a living with out going to an office.
But my second source of income comes from doing a few select art/craft shows per year .. yes my booth takes in a very nice second income. I sew year round making items and sell it off at two shows. There are those who say this business is dead .. well in my over 20 years experience .. I have not had a real "down" year.
Do not read into this that it is a easy fast money... it takes real determination and unwavering comitment to make it work .. and pay.
It would take alot for me to consider going back to "regular "job that I had to report to an office .