Bottle Terrariums: Sprinkle an inch of cactus soil in a clean glass bottle. Divide the succulents into single-stem plantlets, each with roots. Using chopsticks, place the plantlets in the bottle one at a time. Use the chopsticks again to nestle each plantlet into the soil. Once the plants are situated, keep them indoors and out of direct sunlight. These desert plants require only a drop of water every two weeks or so.