Kokedamas are a Japanese idea where the roots of a plants are left in soil, wrapped in moss, and typically hung as decoration.
Water and more soil can be added to the roots to create a nice round ball, then you wrap the soil with a roughly rectangular shaped piece of moss. To secure in place, you can use any sort of wire, string, or twice to encircle the kokedama. Whether you’d like to create a uniform look or a more organic wrapping is up to the individual. Typically, I aim for a uniform arching when wrapping twine.
A plant can last in a kokedama for up to 2-3 years, longer than a plant can typically sit in a pot before needing to be sized up.
To care for a kokedama, submerge in a bowl water for ~5 minutes as needed (this is based on the type of houseplant being wrapped). If a plant needs to be submerged every 2-3 weeks, be mindful to spray the sheet moss with water in between soakings to ensure that the live moss stays healthy.