The Obsidian Flute is a device which fell from the sky over the Naptha Village of Teniere in the reticent sector. Its purpose is not entirely known, though some of its many uses have been discovered. It is primarily used for dime-coding things, by passing them "back" through the aperture. They must not be passed "through" but exclusively "back through". If the throughness is determined to be frontwise, rather than backwise, or if its backness is determined to not be throughness but pastness, inness or Attenboroughness, then the coding will fail and the dimes will remain moist and meaningless. It currently resides in the house of Demitrius, in the Living Ramp.