http://jas.familyfun.go.com/crafts?p...&craftid=11862
CRAFT MATERIALS:
Clean plastic gallon milk jugs
Black permanent marker
Craft knife
String of 50 clear low-wattage holiday lights
Time needed: Under 1 Hour
1. Draw ghost eyes and mouths on the jugs. Tip: Leave the caps on while you do this, so the jugs don't dent.
2. Use the craft knife to cut a half-dollar-size hole in the back of each jug (a parent's job).
3. Arrange the ghosts near each other and string the lights between them, stuffing several bulbs into each of the jugs.
Crafter's comments
If you live somewhere where the wind blows, think about putting some rocks in the bottom.