I also like this Halloweenish poem, from Thomas Pynchon:
Dream tonight of peacock tails
Diamond fields and spouter whales
Ills are many, blessings few
But dreams tonight will shelter you.
Let the vampire’s creaking wing
Hide the stars while banshees sing
Let the ghouls gorge all night long
Dreams will keep you safe and strong
Skeletons with poison teeth
Risen from the world beneath
Ogre, troll, and loup-garou
Bloody wraith who looks like you
Shadow on the window shade
Harpies in a midnight raid
Goblins seeking tender prey
Dreams will chase them all away
Dreams are like a magic cloak
Woven by the fairy folk
Covering from top to toe
Keeping you from winds and woe
And should the Angel come this night
To fetch your soul away from light
Cross yourself, and face the wall
Dreams will help you not at all