Cut out shapes of spiders, bats and witches out of cardboard and tape to the inside of lampshades. Paint or colour them black.
Replace the lightbulb bulb with an orange coloured one.
You could also use chinese lanterns to help build up the effect.
Continue the theme with strings of small orange or red Chinese paper lanterns, with fairy lights.
Place a candelabra on the table top with orange . For a creepy effect use green lightbulbs.
If you have pot plants, drape them with black cloths and spray them with cobweb spray, available at most toy stores.
Continue the theme with black spiders and bats from black cardboard hung low throughout the room, even better where people will bump into them in the dark.
