So if you're an average person, with a job, a mortgage, a family and a little bit of money in the bank, what should you do with it? Geoff Anandappa of Stanley Gibbons Ltd., a London-based collectibles and investment company, suggests investing in rare stamps, what he calls a "blue-chip investment."
For 50 years the value of rare stamps has risen by at least 9 percent a year, driven by investors' interest and the passion of collectors. Anandappa doesn't see that growth slowing down now.
"On the contrary," he said. "I think it's going to increase because at times when the stock markets are volatile, property is a bit shaky, people put their money into hard assets."
Anandappa is so confident, he will guarantee, in writing, a 25 percent increase on your investment over five years. He also sells autographs and is similarly bullish, especially if the famous person in question has passed away.
"You know there's never going to be any more," he explained.
So, Abraham Lincoln: $25,000. Jessica Alba: $80.
If you want something that might age better than a starlet, try fine wine.
"[High-end wine] will always have a value," said Paula Golding of Premier Cru, Fine Wine Investments. "We have never known a high-end bottle of Bordeaux to be worth nothing."
Prices aren't rising as spectacularly as they once did but, apparently, they're holding steady because people are still buying. Why?
"At the end of the day, whatever happens on the market, they're not left with just a piece of paper in their hand," Golding said.
Now, we couldn't do a story about investments without mentioning property. Most people would say stay well clear of it. Average house prices in the United States were down, according to the best estimates, by 16 percent in the past year alone. But, in what they call the "ultra prime market" -- the very top end -- there is still demand and there is still buoyancy. So, don't invest in property unless you are seriously rich already.
"Nightline" visited a $54 million mansion for sale by by the agent Savills. The agency has sold 175 mansions in the $10 million+ bracket so far this year in London alone.
If a $54 million mansion is too rich for you, there's always the Alpaca, a symbol of wealth in ancient Peru and a niche investment in today's America.
A top notch female might cost you $40,000. But they live for 25 years, grow valuable wool and have lots of babies you can sell.
One thing that everyone advises when investing is diversify. Don't put all your eggs in just one basket. And the one thing we now know is that any investment, at its heart, is still a gamble.