An even simpler type of terrarium is one made in an open glass globe that looks like a fish bowl with only river rock in the base. This dirtless terrarium is the perfect surface for a tillandsia ...

Fish bowls are made of see-through glass or acrylics and are typically small and round or shaped like a drum. They are great for keeping one or two small fish, several plants or a terrarium.

Using carnivorous plants, like Venus flytraps, offers a fresh take on a traditional terrarium. To create the display, fill the bottom third of a glass fish bowl or round vase with pebbles for ...