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.

Surrounded by tall houses, they felt like inhabitants of a fish bowl whenever they ventured into it. The entire garden was a bog. They sunk into the lawn even in high summer. The plants weren't ...