[header] How to make your own decorations for halloween [title] Clean several plastic milk jugs. [step] You don't need to cut them out or in any way modify them--they just need to be clean. Each one will be one ghost--how many milk jugs do you need? [title] Draw a face on the jugs. 
[step] You can either use a black permanent marker, felt, or any material you have lying around the house. The permanent marker will be the easiest to make a detailed face with.