It is well known that the one safe place from creatures is on your bed, under your blanket. Completely under your blanket. Head, feet and everything else.
This is true, all beings fear blankets, even I do, for there is something that lurks in your safehouse.
There are creatures that nobody can even dream of. They hide in there, waiting for you to disperse inside.
They can't attack you if you have even the slightest bit of light on you, that's why you have to be entirely submerged. They fear the light, and for a very good reason. That reason is that they can be seen in it.
For eons their face has been a mystery, anybody that sees them has died before they have the chance to even scream. They real creepy thing is, as soon as they get you, nobody ever remembers you existed. You're wiped from reality.
The only reason I know about these things is because I do not technically live in your reality. I am an essence, a highly present one, but I still don't really exist. I haven't seen them myself, but I've seen the result. Families forgetting that they ever had a child, armies losing battles from the lack of soldiers, etc.
Now, all you have to do to avoid them is keep a little bit of yourself outside of the blanket, even if it's just half a foot. But I guess the real question is, what's scarier? Them or the scratching on your door?