These adorable cats are part of the Hocus the Black Cat fabric collection.
Alexander Henry's fabulous "After Dark" fabric features a raven, black feathers, a spider, and a skull.
Here is "After Dark" in white, with a prominent black widow spider on it (shiver).
"After Dark" also comes in black on black.
This Witches Brew fabric is a little too much on the cutesy side for me, but then again, I never can resist potion bottles.
"Mona Makes Magic" is another cool fabric from Alexander Henry. It comes in several colorways.
These spooky bats have glowing orange eyes.
Check out Robert Kaufman's excellent Sleepy Hollow fabric designs. There are several different patterns, all pretty dark and quietly sinister looking.
This Pumpkin Parade fabric features spooky eyes.
This Boneful fabric features skulls on a damask background.
I adore the Oddities line of fabrics. They feature witches, vampires, and scary black cats.