Vintage sports memorabilia can be a store of wealth. This Honus Wagner baseball card is worth over $2 million. Wikimedia Commons "Gold gets dug out of the ground in Africa or someplace. Then we melt it down, dig another hole, bury it again and pay people to stand around guarding it. It has no utility. Anyone watching from Mars would be scratching their head."

That's what Warren Buffett said back in 1998.

Gold has long been considered a safe-haven investment. However, the price of gold has performed dismally in recent years.

For those who don't trust the conventional financial markets, there are alternative more unorthodox ways to put away wealth.

We put together a list of some odd assets that have performed relatively well.

But be warned. These assets are very illiquid, and there's no guarantee that their values won't plunge as gold has before them.