Vampire off revenants—are common in vampire folklore. Garlic is a common example, a branch of wild rose and hawthorn plant are said to harm vampires, and in Europe, sprinkling mustard seeds on the roof of a house was said to keep them away. Other apotropaics include sacred items, for example a crucifix, rosary, or holy water. Vampires are said to be unable to walk on consecrated ground, such as that of churches or temples, or cross running water. Although not traditionally regarded as an apotropaic, mirrors have been used to ward off vampires when placed, facing outwards, on a door (in
Cross and circle game The category may also be expanded to include circular or square boards "without" a cross which are nevertheless quartered (Zohn Ahl), and boards that have more than four spokes (Aggravation, Trivial Pursuit). The game board for the Aztec game Patolli consists of a collapsed circle "without" an interior cross and thus has the distinction of being a cross that "is" a circle (topologically), without being a cross "plus" circle. Tokens are moved around spaces drawn on the circle and on the cross, with the goal of being the first player to move all tokens all the way around the board.