A quick one from a game of Warrior Rogue & Mage, which if you don't know is like old-school D&D except none of the rules are the same.

The party was investigating grave robbery in a small town out in the middle of nowhere. Some of the populace expressed certainty that the witch who lives in the forest is behind it somehow, or at least knows about it. The party went to check it out. The witch turned out to be young and beautiful instead of old and gross, but still a legit creepy wielder of forbidden magicks. She refused to give the party any assistance without some form of payment. To which the two dwarves in the party replied:

"We'll give you the elf for a night."

The witch looked the elf over once and agreed. She gave them a magic item to let them see the souls of the restless dead, which led them to the culprit (a ghoul). The elf missed most of the adventure though.