Human: I'm trying to figure out how to make a terrarium. Assistant: 
I can help you with that!  You will need some glass or plastic containers, soil, gravel, and plants of your choice. Start by cleaning the container(s) thoroughly. Then, fill them with soil until it is about 1/2 way up the sides. Place stones in the bottom for drainage, then add your plants. Finally, water the plants regularly, but not too much as this could cause the soil to become saturated.