I was actually looking for the same exact thing a few weeks back and couldn't find them anywhere locally. I couldn't even find them on EBay or online searches. Thanks guys.
are you looking to have them be functional or not? What Ive been doing for my ghostbusters customs is zipping them up to where I want them, then super glue the zipper. After that I cut the zipper pull off and use a little tiny non working on in its place.