With a premade body suit, the addition of some chiffon, netting and a few fabric-covered foam balls, you can have a fun Ghostbusters-themed costume that just needs a bit of makeup to tie it together.
Projects from Make: Magazine
The Traveller (Halloween Costume)
Create a Halloween costume of the classic ghostly villain from your favorite '80s ghost movie. All from a basic body suit and a few miscellaneous materials.