Yeah i know this is common sense, but im telling this for the people who don't know yet.
While in the druid flight form, you can also pick up items while flying, this comes in handy for those quests who say (for example) "get 20 pieces of wood from those tree's over there, but look out for the monsters that walk around it" but then you don't need to kill the mobs that walk around it because you can just fly above the (quest) item and start looting from the air
This also works for herbalism, i don't know about mining and skinning though.
again, common sense
edit #2: ok, this is the status:
Herbalism - works
skinning - maybe
mining - not possible