Build relationships with companies that don't mind working with remote consultants or employees. Writing was mentioned by jaltucher and is a great place to start. If money isn't a huge issue, you could write squidoo lenses or web pages full time adding your own ads. I wrote a few dozen lenses for squidoo in 2008 early 2009 and they generated a steady $40-60 a month. Take that concept and push it to a few hundred or thousand lenses or focused sites.
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Build relationships with companies that don't mind working with remote consultants or employees. Writing was mentioned by jaltucher and is a great place to start. If money isn't a huge issue, you could write squidoo lenses or web pages full time adding your own ads. I wrote a few dozen lenses for squidoo in 2008 early 2009 and they generated a steady $40-60 a month. Take that concept and push it to a few hundred or thousand lenses or focused sites.