2. A bed (Death Bed: The Bed That Eats)
In one of the most ridiculous horror flicks of the '70s (that's saying something), a demonically possessed bed that looks like something Criss Angel would sleep on manages to eat multiple victims despite being completely immobile.
Method of attack: Engulfs those who rest upon its pillowy surface and digests them in a yellowish fluid that can only be stomach acid ... inside a bed?
How to defeat: Sleep on the couch, get a futon (it's good for your back, too)