Kokedama is the Japanese art form of enclosing a plant’s root mass in moss. Kokedama means “moss ball”. This trend is growing and can be quite fun. A current spin off of the Kokedama trend is String Gardening. The moss balls are suspended with string.
Wetting Your Plants - Stunning Low-Budget Container Gardens. Don't throw away those leaky or dented watering cans. Use them as-is or remove the handle and widen the opening to make more room for plants.