1. A goatskin notebook for writing down dreams

  2. Mont Blanc fountain pen (extra credit if it belonged to Mme Blavatsky)

  3. A Chinese coin or a stone in your pocket for rubbing

  4. Frequenting places where you can overhear things

  5. Tiny recorders, spyglasses, microscopic listening devices

  6. A little man at the back of your head

  7. The Ghost-Companion

  8. Susceptibility to hypnosis

  9. Large sheets of homemade paper, a stack a foot thick

  10. A subscription to cable TV