Mandragora
Since we all agree Wikipedia is never wrong ;), I'll just stick with their definitions. Mandragora is the genus of the plant mandrake, which often has a somewhat man-shaped root. It is also the name of a type of demon. These demons are little dolls given to a sorceror by the Devil for the purpose of consulting "in time of need". They are thought to be related to the "[LINK: http://en.wikipedia.org/wiki/Fetishism] fetish, which is nothing else than a dwelling-place made by a [LINK: http://en.wikipedia.org/wiki/Shaman] shaman or [LINK: http://en.wikipedia.org/wiki/Medicine-man] medicine-man for the reception of any wandering spirit who chooses to take up his abode therein."
Admittedly, Wikipedia has this last quote labeled as "citation needed", but this does sound remarkably like a spare body.