Like certain animals which don't attack or are hostile towards you. Like rats, toads, chicken and well all of non hostile animals which would sit in place and give you quest or you could track them down and rigth click to either catch or "talk" and if you kill one the quest giver would jump to another same breed of animal, but only wild animals not domesticated or maybe domesticated too, to attract people to their villages and realms to encourage trade and community. Would be fun no?
All of natural resources could also be a quests givers so people wouldn't abuse them and when they are empty/picked dry of their resource they would still have a purpose and that would be that they would give you a quest to complete.
Finally make dryads as quest givers too (which I guess fall under all of no aggresive animals).
Things like that, because all now we have a trees, trunks and rocks/boulders as quest givers and that's it I think and walking to them can be a chore and once some cunt destroys them it can be a pain or sometimes pressing a wrong button could lead to a quest giver which might ve even further away, so making quest givers way more fun and convenient especially those supper fast rabbits XD
I am aware devs are working on something regarding to quest givers, but would this suggestion be able to fall rigth in or is it something new entirely?