The Addams family always has kooky and zany desires, all of which can be tracked by tapping the notepad at the bottom right. If you do not have any current quests that requires specific items, go ahead and use them to fulfill desires. Desires are the main way to earn supplemental Addams coins, and you will need a lot of coins in order to bring the Mystery Manor back to its full glory. It is also a great way to clear your inventory if you are getting full of stuff. Speaking of which.