A Terrarium is just a tiny indoor garden that is put inside a container. Terrariums are usually used as decorative items inside the house, and they do this perfectly. Terrariums usually add life to the room where they're placed in, they can make the room feel green and peaceful. Plants used in terrariums are usually low-maintenance plants, so you don't have to worry about taking care of them. Various ways exist to make your own terrarium, and here are some of the best.