If, like me, you are working with minimal equipment or you just prefer the advantages a pen and paper classroom has to offer, then search no more. British Coucil's Learn English has everything an EFL teacher can dream of. Concerning Halloween, you can find a magazine article together with a downloadable audio file, a pre-reading vocabulary activity and a comprehension task. They work both on screen and on paper.
Oxford University Press offers an equally interesting array of Halloween resources for Pre-Intermediate to Higher Intermediate learners with Scary Collocations, Ghoulish Word Forms, Frightful Idioms, a Shadowy Web Quest and guidelines for writing a Ghost Story! There is also a list of Bookworm ghost stories and activities you can do with your class.