Pic related. When I was a kid I was walking with my mom along the road just down the street by a treeline and tied to one of the trees by it's neck was a baby doll.
Very unnerving.
We never found who did it or why.
Years later I was out with my mom again in another part of the woods and she swore she saw something that looked humanoid and albino, like all white. It scared her enough that she wanted to leave right then.
Still think about both of these from time to time.
Really like how Latin American folklore is either cute creatures that defend the forest and nature, or evil demons that will kill you and devour your family. And sometimes the evil ones might do something good to you.