What if a magically inclined character of yours could carve small strange little figurines out of wood (or whatever other materials are available) and then look through said figurines eyes when closing their own.
These figurines if placed outside the carvers home could effectively work as a magical security camerasm
Maybe the eyes of the figurines could be looked through by others with the same ability, unless the carver has the necessary skill to restrict others sight through them.
Oh and if a antagonistic character uses this ability why not have them over rely on it to the point to the point of absurdity.
Perhaps have them work with others, using the eyes of the figurines to locate and send enemies to the protagonists locations almost seeming where they'll go before they do.
Then when one of the protagonists vanishes from their eyes they could start looking through every figurine over and over thinking it'd be impossible to get through network of eyes they have set up around the place.
That is of course before the vanished protagonist becomes un-vanished directly Infront of the oblivious antagonist who has forgotten to check through their own eyes.

















