Quicksilver
Early Black Americans believed that sprinkling the floor with quicksilver would deter ghosts.
Ram Ram!
In Bengalese folklore, shouting "Ram Ram!" drives way ghosts and all evil things.
Source
Encyclopaedia of superstitions, folklore, and the occult sciences of the world. : a comprehensive library of human belief and practice in the mysteries of life ... Editorial staff: Cora Linn Daniels and C.M. Stevans. (1903). Chicago.
Antler
"Antler– Stags' horns are considered in Spain to be an omen of the evil eye, and to be a safeguard against its malignant influence.
Should the evil glance be cast, it is believed the horn recieves it and instantly snaps asunder. They wear a tip of horn mounted in silver
Listener to the Dead
In Brittany, listening and speaking for the dead was once a well-respected trade.
Space as a Superfluid
An ancient theory that is seeing a resurgence thanks to advances in Physics.
Antaura, the Demoness of Migraines
Summary and additional sources on the Greco-Roman daemon of migraines.