Grow a variety of cacti, sedum, and carnivorous plants in the world\’s smallest glass terrarium. While measuring a mere 1.5 inches, these terrariums pack a lot of punch! They have a flat surface on the bottom to prevent rolling and are so small they can be placed almost anywhere there is sunlight! Many plants, including cacti, will naturally bonsai based on the container they are in and can flourish for years in these mast miniature of terrariums!