Way too many comments in the thread branching off yours are answering the wrong question -- "how to grow your money in general" -- which is not the same as passive income.
[1] See Vanguard's bond fund yield https://personal.vanguard.com/us/funds/snapshot?FundId=0084&...
However, if you're going to dispute the premise of the question, you need to explicitly say so and connect it to the alternate point you're making rather than expect readers to see the connection; otherwise, it looks like you're just being non-responsive.
And indeed, that's what the thread looks like now.
You can inherit only once from your rich parents.
For example, the baseline interest rate of Brazilian Government Bonds are paying 14.25%/year.
The exchange rate is much more volatile than the inflation rate alone, but it is relatively easy to hedge.
As in the peer thread on stock funds, this plan is not a great income generator because it's designed more for capital preservation and long term capital gains. (Unless you have half a million dollars in there and interest rates are favorable for the bonds or cash holdings.) But for me it's a great way to carve out savings and get some real compounding going. The longest drawdown in the past 40 years is 2-3 years, so I'm comfortable using it with any savings I don't expect to need to use in the next five or more years.
Implementation could hardly be simpler for the robustness that it offers. You put the money in and divide it into four parts. Once a year take a look at the balances and rebalance if any category is too far out of alignment.
For resources, Harry Browne's book mentioned in [1] is awesome for general investment sense and lays out the basics of the plan. Another book by Roland and Lawson [2] goes into much more of the nuts and bolts of implementation using different account types, tax status, and many other factors in individual situations.
[1] https://en.wikipedia.org/wiki/Fail-Safe_Investing
[2] http://www.amazon.com/The-Permanent-Portfolio-Long-Term-Inve...
The yield? 2.1% Nothing to write home about. [1]
Is there some high-yielding, regular-income fund I should know about? Even allowing for sorta-irregular funds, you probably can't do much better in this environment, though I'd like to be proven wrong.
[1] https://personal.vanguard.com/us/funds/snapshot?FundId=0723&...
The chart in [3] shows a few funds against the S&P 500. Prices seem to largely track the S&P index. Maybe there's a way to chart the dividend yield over time, too.
[1] http://www.forbes.com/sites/moneybuilder/2014/08/22/choosing...
[2] http://gyroscopicinvesting.com/forum/stocks/what-about-a-hig...
[3] https://www.google.com/finance?chdnp=1&chdd=1&chds=1&chdv=1&...
This is essentially what Personal Capital, Wealthfront, Betterment, etc., do for you. I don't use those services because I enjoy learning about personal finance and I think the work required on my part is pretty easy. Your mileage may vary.
Haven't tried this myself, but Tim Ferriss seems to advertise it a lot and I have a few coworkers that use it.
Minimum is $500 with no management fees (up to 10k I think)