Chocolate cups are not just used for making candies. They can also be filled with whipped cream, mousse, small scoops of ice cream, ganache, and any other soft and tasty filling you can think of. You can definitely buy chocolate cups--kitchen supply stores, Cost Plus, and even many liquor stores carry them--but it's several dollars for a dozen and I find mine are frequently broken, bloomed, or both when I open the package. So when I have the time, I save myself some frustration and money and make my own. It is a little time consuming, but they can be made in advance and stored for weeks before you use them, so with some advanced planning you can be rollin' in chocolate cups whenever you want!
Chocolate Cups Photo c2011 Elizabeth LaBau, licensed to About.com, Inc.