Drape very lightweight fabric over a wire hangar, using stuffing to hold a head shape if necessary. Tip: Bend the arms upward. (The hanger arms become the ghost's shoulders). Now hang the ghost in an area where it will catch the breeze.
Glow in the dark dust that lights up your lawn and garden. Just sprinkle on grass, shrubs, railings, etc. Non-toxic and fun! Great for halloween!-- have blacklights to shine on it so it doesn't fade later at night.