If you are going to have a zombie party then you may want to check out some of these items from Anatomical.com under the Halloween section.

They have gelatin molds for human brain, heart, and hand!  Imagine you and your zombie friends diving into jello brains!  Honestly, it grosses me out a bit.  Heh heh  Still, they seem wicked cool and I will probably buy some.

They also have a lot of other items that could be used for decoration and such, but these items caught my eye since every good zombie is always hungry!