One aquascaping technique used commonly by hobbyists from all over the world is dressing up hardscaping material (driftwood, rocks) with plants.
Some plants often used for this technique are:
Anubias barteri v nana
Anubias barteri v petit
Java Fern (regular, Narrow, Windelov, Tropica, Philippine, etc)
Monoselenium tenerum (Pellia)
Vesicularia dubyana (java moss)
For tying Anubias and ferns (Bolbitis, Java Fern) to driftwood, thin rubber bands can hold them in place. By the time these rubber bands rot, the plant should be firmly attached to the driftwood. Be careful not to crush the plant by using a rubber band that is too wide or too tight. Fishing line (my preference) also works very effectively, especially since the transparent thread is nearly invisible unlike the rubber bands.
For tying mosses and Pellia to driftwood and rocks, it is best to use fishing line (although cotton thread works, too, but this eventually rots). First, spread the moss or Pellia thinly across the surface of the object (the thinner the spread, the better it will grow out). Then, take the monofilament line and wrap it around the object repeatedly in intervals of ~0.5 inches across the piece of wood or rock.
How about algae? A thin patina of it on a piece of rock or wood adds a lot to an aquascape, in my opinion. Some layouts, especially iwagumi rock arrangements, could be improved by having a slight patina of algae on the rocks. Otherwise, it looks too sterile and new.
1) What does tying ferns or plants to driftwood add to an aquascape? What does it add to the wood itself?
2) Has anyone had a plant grow well attached to driftwood that is not mentioned above?