Halloween Baby Shower Ideas

I am throwing a baby shower for my niece with a Fall/Halloween theme, in particular a Rosemary's Baby theme. I have already thought about black baby buggies, but are there any suggestions as to decorations or any ideas or websites to make this gothic Halloweenish baby shower a hit?

She would like to give the shower a 1960s New York feel, the year and place Rosemary's Baby was filmed. And she doesn't want the color black overpowering the decor.

By Lisa from OH