This article considers the construction and application of two manuscript objects that feature in Tibetan rituals. One is a type of device known variously as a ‘volvelle’ or a ‘wheel chart’, among other names, that is used in various cultures to perform certain simple computations. The example considered here comprises a pair of paper discs that are manipulated for the purpose of elemental and astrological divination. The other object is a block print of an effigy representing the receptacle for the soul of a demon that is ‘imprisoned’ inside it and subsequently destroyed. The article describes a particular exorcistic ritual in which both devices play a role, before focusing on the composition of the objects themselves. Translations of Tibetan texts related to their use are also provided.