A large urn
Immobile, magical
About 4 feet tall, made of thick shell-like material, and fitted with a heavy lid. When the urn is unoccupied and a Fae looks inside, it is compelled to crawl in (it can always fit). If you then close the lid, the Fae is trapped and the urn slowly and painfully peels away its knowledge, essence, and sense of self. In time, nothing remains but a pile of pearls (Value 2).
A handful of artifacts are presented as steading improvements, and many arcana are some sort of artifact. You can create your own, too; see Creating artifacts.
If the PCs take an artifact with them, make sure that someone adds it to their inventory and is accounting for its load (if any). If they bring it home, prompt the players to decide whether it becomes someone's special possession or an asset of the village as a whole.