Now, what about a...
"Vintage year"!
In one of towns you meet a rich mercahant. He complains to you that some thieves have brokken into his house yesterday and stole some poessesions, including thre very rare bottles of vine that he was going to give as a present to a local Duke/Kind/some other feudal. To find out who stole the bottles, you'll have to bribe an old man in some local tavern, market or some other location. He'll tell who stole it. You'll go to specific location where there will be a thieves camp. You'll kill them, and last of them will surrender to you if you prmoise to let him go. He'll give one of bottles, and he'll say where other are.
Okay, now about those other two:
1. It seems that the same man who you bribed to give off who stole the vine is a father of thieve's leader and a terrible, terrible drunkard. His son gave one of bottles to him and he drunk it all, without understanding the true value of it. You would probably now kill this old drunk idiot, but he says he heard that long time ago the merchant's who you took quest from father had a bottle of same vine burried with him. So you go to greaveyard or whatever, steal the vine from grave and kill the ghost or whatever of the father.
3. It turns out one of the theives knew the local monarch's squire or loyal cook or whatever and sold a bottle to him. So you'll have... yes, you'll have to break into the castke or whatever and steal the bottle back! Few guards will probably be killed, but hey, it's worth the reward!
So you return all three bottles back to the merchant, he complains about how everything is misreable since somebody killed the camp of mercenaries that were buying weapons from him and ere his best customers, that somebody broke into the castle and killed the chef so there will be no celebration in castle/palace and he won't be able to give the bottles to the local monarch and that somebody ransacked the grave of his father and now he haunts him at night, saying he got fooled by the man he hired. Yes, the merchant is quite a fool, but hey, the reward is big!