University of Missouri Extension
The Terrariums page of the University of Missouri Extension site has a good general discussion of terrariums and an excellent list of plants suitable for terrariums. It specifies whether the plant is suitable for a closed or open container.
Tool or Gardening Product
Nourse Farms Nursery
Whether you're starting a new raspberry or strawberry patch, need a few more blueberry plants to keep up with your family's appetite, or are wondering what other small fruits you might be able to grow here in New England, Nourse Farms in western Massachusetts probably has what you're looking for. They can help you choose what to plant, and then tell you how to plant it. If you live close by, you can visit their pick-your-own fields. Visit them online at: http://www.noursefarms.com/.