The Weres was an

amulet An amulet, also known as a good luck charm or phylactery, is an object believed to confer protection upon its possessor. The word "amulet" comes from the Latin word amuletum, which Pliny's ''Natural History'' describes as "an object that protects ...

that symbolically represented the pillow or headrest under the head of an Egyptian mummy. They were placed under the mummy's head to protect it from damage. The Weres amulet was often inscribed with a spell which read: "Their enemies have no power to cut off the heads of the deceased. The deceased shall cut off the heads of their enemies." Weres amulets were sometimes placed in mummy wrappings to magically protect and lift the head of the deceased.Remler, op. cit., p.170 Chapter 125 of the Egyptian

Book of the Dead The ''Book of the Dead'' ( egy, 𓂋𓏤𓈒𓈒𓈒𓏌𓏤𓉐𓂋𓏏𓂻𓅓𓉔𓂋𓅱𓇳𓏤, ''rw n(y)w prt m hrw(w)'') is an ancient Egyptian funerary text generally written on papyrus and used from the beginning of the New Kingdom ...

refers to the headrest:

References

{{Ancient Egypt topics Egyptian artefact types