Quick! Set the Sprite trap!
A sprite trap is a magic magical device used to capture troublesome or harmful spirits and ghosts. These devices refer to a sprite as a preternatural creature.
The sprite trap is created from a blackthorn stave and copper wire that has never carried electricity. During a ritual process, the copper wire is bound to the stave with red thread and the stave is marked with a Dag (or D) rune.
Sprite traps are used at night, when the trap is set at the entrance to a home, church, graveyard, or other location where disturbances are taking place. To attract the troublesome entity, a cleft blackthorn stave with a lighted candle is placed in front of the trap.
After the sprite trap has captured a spirit, it is removed from the location and the red thread is cut with a consecrated knife; the thread is then placed into a prepared witch bottle. If the bottle has been prepared to imprison the spirit, a spell is recited while the thread is placed in it. Finally, the bottle is corked and sealed with red wax before being buried. A thorn bush will be planted on the site.
It is said that if a witch’s bottle containing a spirit is opened, a very angry spirit will escape.
Read more: http://www.monstropedia.org/index.php?title=Sprite_trap#ixzz2aq53Ak3k