Suggesting collectible trading cards on all the different famous faces of Withmore.
There could be a card shop with NPCs who do rotating trades and will buy and sell certain cards each day.
The cards would essentially act like photos and can be stored in a special binder, and if you show a certain NPC your binder you could get put on a leaderboard for best card collection.
Different cards can have different rarity types, ranging from mundane cardboard to holos, to solid gold or something, which changes how much their worth.