Make Your Own:
Find a suitable container, preferably glass. You can use anything including a vase, a cleaned-out pasta jar, a fishbowl, or a special terrarium bowl.
Fill the bottom of the container with small rocks to collect the water drainage.
Add a layer of potting soil deep enough to support the plant roots.
Make a hole in the soil big enough for the roots and nestle the plants inside.
Play around with the arrangement by mixing up the types of plants, colors, and sizes to make it more visually pleasing.
Once the plants are arranged, add white sand around the plants.
Finish with some landscaping. Place a few additional pebbles, rocks, stones, and sticks to complete the look.
Tips: Opt out for plants that like darkness and have a high tolerance for humidity. Don't forget to keep in mind light and temperature while finding a place for your terrarium. Direct sunlight and cold temperatures might cause harm to your plants.