Learn how to make a micro terrarium which usually holds 1 small plant in simple steps. You can use any type of container like a light bulb, yogurt container, baby fruit jar, spice container, honey jar, etc. Now select your container and add some soil in it. Place the seeds if you are using them or plant the miniature sinningia in the soil. Use a copper wire to tamper down the soil nicely and close the container lid.