Terrarium KitTerrarium Kits for Sale Online Create Your Own Terrarium Be a part of the trend sweeping across the nation! Create Your Own Terrarium with this easy to use kit that includes a glass container with lid, hydrostones for drainage, green moss and soil mix. Making a terrarium is a lot of fun for birthday parties, an activity for a rainy day, or even as a gift for someone who has every other gardening accessory. All you need to add to make it truly your own