Commodity investments come in all shapes in sizes. While futures are arguably the most popular way to obtain exposure to your favorite commodity, there are numerous other options out there. There are a number of exchange traded products that offer exposure to futures, as well as physical commodities like the SPDR Gold Trust (GLD), which invests in physical gold bullion. Finally, there are commodity stocks, which generally consist of mining and exploration companies like BHP Billiton. This latter option may be particularly attractive to investors seeking high yields, but still want to reap the benefits of commodity exposure in their portfolio [see also Why Commodities Belong In Your Portfolio].