Getting exalted with Darnassus

There is the morrowgrain quest, and the Runecloth turn in. Are there mobs that i can grind to increase rep, or a quest turn in exploit?

Im sure this has been already posted but I can't find it.
thanks

Morrowgrain, RC, and Ungoro Soil Quest Turnins(repeatable) are the only things to my knowledge.

trolls blood in AV as well