Why not do a kind of work you find really enjoyable, and sell/trade that work with people whose company you enjoy? This is generally my philosophy to entrepreneurship anyways - there's a bit of involuntary time involved (taxes, accounting, errands), but I think you could get it down to less than one hour per day. If you didn't care about having extremely nice material comforts/status symbols, I bet you could make a decent life doing a skill/craft you like and enjoy being immersed in with minimum admin/involuntary time. Some kind of focused writing, craft, skill, or technology work maybe?
The only voluntary activities are reading, writing, thinking, and communicating. I guess eating, sex, and shitting can all go in the voluntary slot, too.
It's just that idea of starting small, as a way to get started and get more information, more confidence (from having some progress), and get the blood flowing through acting on your vision.
BTW: lutsp is in the thread, who's actually done this (see his link to his shack.)