Skyrim:Favors

Favors are a variety of miscellaneous quest that typically involve doing a small errand for the quest giver. Most favor quests provide a standard reward, such as some gold. However, favor quests also provide some indirect rewards:

• Your relationship rank with the quest giver increases, which implies:
  • You are freely able to take any small value items in the quest giver's house.
  • The quest giver may now like you enough to consider marrying you.
• You have provided assistance to a citizen of the hold, which helps you become a Thane in that hold – even if the favor is completed before you start the Thane quest.

The favor quests category provides a list of relevant quests.