Origami Club: Halloween – Site offers a variety of origami projects to do including: Jack ‘O Lantern, Bat, Ghost, Witch, Skull, and others.
Origami Resource Center: Halloween – Site offers bats, ghosts, spiders, owls, pumpkins, cats and other items.
Activity Village: Halloween Origami – Bats, Broomsticks, Mummy, Witches hat and others.
Origami Instructions: Halloween Pumpkin Origami – This site offers this project and others. Look on the left side of the page and scroll down to Halloween to see the rest of the projects.
Origami-Make: How To Make Origami Halloween Models – This site offers some unique projects: A Tombstone, Cauldron, Coffin, Crow, Moon, and others.