I know that creepy dummies are in various horror movies, but I hope that this idea is different enough to make it workable. The theme here is that we have no idea what its motive is, or what it is capable of. It's bored and therefore mutilates things for fun, but if it got out… (if you feel this needs to be made more explicit, I can do that). If this is recieved well, I have ideas for where that loose end could be taken.
Improvements, comments, criticism, all welcome.