Operating Several Home Businesses Simultaneously

In response to my post, One Home Business or Many, the blogger at Home Business Entrepreneur left the following intriguing comment:

I run several home based business. I have a home based bookstore. I also sell the books on the internet. I sell some paintings on the wall of the home based bookstore and I make money blogging about how to run a bookstore. All of them are run simultaneously from my living room.

It’s really amazing that in this day and age we can operate a business from our living room and reach people all over the world.  We actually can operate several home businesses which might or might not be related. 

What are doing for a home business?