Anubias Nana is a short, slow-growing aquatic plant that prefers moderate lighting. It can be affixed to rocks or driftwood using string, fishing line, or aquarium-safe glues. It may also be planted directly into the aquarium's substrate and does not require a specific type of substrate to thrive.
When planting, make sure the rhizome (the thick green stem that the leaves grow from), is always exposed to light. Only bury the roots.
(Image sourced from Fishkeeping World).