"Marguerite's lantern. It seems she used its light to control the insects."
— Inventory description
Lantern is a key item in Resident Evil 7: Biohazard.
The Lantern is required to access much of the top floor of the old house, with one door close to the stairs requiring two equally-balanced lanterns to unlock it.
The Lantern is retrieved when killing Marguerite Baker in the greenhouse.