Spooky Window Shadows
To create a spooky window shadow cover the window with white tissue paper or a garbage bag. Make sure it fully covers the window.
Use Black Construction paper or Black Posterboard and sketch witches, ghosts, bats, etc and then hang them in the window, facing outdoors.
Turn on a light or lamp in the house and from the outside it will appear as though their is a creepy shadow in the window.
If you have French doors or Glass Sliding doors, you can spray paint cardboard black and cut out large shapes.