The EcoSphere Closed Aquatic Ecosystem is a complete ecosystem with sea water, algae, bacteria and live marine shrimp, all enclosed in a sealed glass sphere. All you need to do is to place the EcoSphere in sunlight. Unlike an aquarium, you do not need to feed the shrimp or change the water. The ecosystem is self contained and self sustaining.
DIY Magnetic wall terrariums - Gravel (can be found at any pet store in the aquarium section) - Air plants, cactus or succulents (you will need a small amount of potting soil if not using air plants) - Moss - spray paint - magnetic metal tins (from here or here, you just need to slap magnetic tape on the back!) - Dremel tool - painter’s tape - E6000 glue