Cunning Copper (Patreon)

Wondrous item, uncommon

This copper coin has an ear on one side and eye on the other. While holding both a mundane copper piece and the cunning copper, you can speak its command word using a bonus action. Until you speak the command word again or until 24 hours have passed, you can use an action to hold the cunning copper to your eye or ear: you then see or hear (respectively) through the other copper piece as if you were in its space, provided you are on the same plane of existence as it. You continue to perceive through the coin in this way until you remove the cunning copper from your eye or ear (up to a maximum duration of 10 minutes). Afterward, the cunning copper can't be used to perceive through a coin using that sense again until the next dawn.

People always say money talks—I like to think money listens and sees all.