"What are some ways people might try to ward off evil spirits? Have you ever heard of any traditions or superstitions?"
Ward off evil spirits = (keep away) repeler⇒, ahuyentar
"Have you ever carved a pumpkin? What kind of face or design would you choose if you had to carve one this Halloween?"
"Did you ever go trick-or-treating as a child? If you could go now, what costume would you wear, and what candy would you hope to get?"