As you walk through our neighborhood, you can see these plants hanging from trees called "Pele's hair".
Pele is the Hawaiian goddess of fire and dance. If you've seen portraits of Pele, you'll notice that her hair looks something like this plant.
This plant is also called Spanish moss and can be found in the Southern part of the mainland.
I think I've seen this in some movies involving swamps too.
Anyway, I think you just hang a piece of the moss onto a wire or string and it starts growing.
No dirt needed.
In Hawaii, some use it in making lei or as ornamental decorations.
Kinda cool, don't you think?