The originality of a terrarium depends on the type of container you use, the plants you choose and the way you arrange them. Any glass container can serve as a terrarium, provided that it is transparent. You can recycle a large glass jar, a fish bowl or an old aquarium. Alternatively, there are some very attractive containers made of wood and glass or plastic available on the market.
It doesn’t take much to set up a terrarium: fine gravel or coarse sand, charcoal chips, synthetic fabric (nylon) or screen to act as a soil separator, and potting mix appropriate to the plants used. If you wish to add a decorative touch, you can cover the soil with colored stone, bark chips or ground-cover plants.