Sdi Productions | Istock | Getty ImagesAmid growing consumer interest in alternative investments, financial advisors say it's important to find the right way to invest.Alternative investments are a broad category that covers many assets outside traditional holdings of cash, stock and bonds. Alts include private-market assets, real estate, commodities such as gold and oil, and cryptocurrencies, among others.Investing in these products can entail added risks and complexities, advisors said. One smart way to g ...