Goblins, witches, and vampires are definitely up there too, but a good old fashioned bag of bones takes the creepy cake!
The other tricky things about skeletons is that if everything goes well, you'll never see it. It's in there, all of the time, following you around, copying your every move, sleeping and eating whenever you do. And even if you have heard about the skeletons we all have under our clothes and skin and muscles, take a moment to think about how weird that is! Add a skull mask and some matching skeletal gloves and shoe covers to complete this creepy look, and you'll be ready for trick-or-treating, acting in a haunted house, or even LARPing as a mystical bony monster.