In this video Terry Erasmus gives you a summary of what you will need to complete a root over rock planting. Links to products mentioned in the video below:

Aluminium wire: https://www.bonsaitree.co.za/collecti...
Raffia: https://www.bonsaitree.co.za/products...
Jute string: https://www.bonsaitree.co.za/products...
Parafilm: https://www.bonsaitree.co.za/products...
Elephant Skin Stone: https://www.bonsaitree.co.za/products...
Japanese containers: https://www.bonsaitree.co.za/collecti...
Clay development containers: https://www.bonsaitree.co.za/products...
Growing Media: https://www.bonsaitree.co.za/collecti...
Drainage mesh: https://www.bonsaitree.co.za/products...