Little Otik (2000)

When a childless couple learn that they cannot have children, it causes great distress. To ease his wife's pain, the man finds a stump in the backyard and chops it and varnishes it into the shape of a child. However the woman takes the root as her baby and starts to pretend that it is real. When the root takes life they seem to have gained a child; but its appetite is much greater than that of a normal child.