Title:  Timothy "Four-Hour Work Week" Ferriss has a concept he calls a "cash-flow muse".  That's a little business that generates some monthly cash without taking up too much of your time.  I think the idea is that with a couple of these running, you're pretty much free to do as you please most of the time.<p>Some desirable attributes of a cash-flow muse:<p>- You own it.<p>- The value proposition is simple enough to explain in one sentence.<p>- High margin: 4x to 50x.<p>- Easy to automate or outsource the selling, record-keeping, and whatever other businessy stuff is needed.<p>- Low capital investment.<p>- Takes no more than about 4 weeks to manufacture the product.<p>Ferriss often casually mentioned that generating this sort of cash flow is easy to do.  It might take a month of real work to set one up, and you'll likely have to market-test a few ideas before you find one that's solid enough to commit to, but once it's up, it should pay your living expenses.<p>That sounds really good--when talked about abstractly.  The main idea is really not that a cash-flow muse can free up your time, it's that cash-flow-muse opportunities are abundant and easy to find.  I myself have little concrete idea of what sort of tiny product you could turn into a tiny business like this, and scarcely any idea how to begin searching for one.<p>My question:  Has anyone actually done one of these?
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