You can make your own entrails using Great Stuff, you should be able to Google something? I used was paper and ran long strands of GS, spritz with water to help set and paint them up! I saved a few large foam meat trays and wrapped them like a deli tray. I also made a brain out of GS, again on wax paper and using a balled up piece of tinfoil add GS in pattern like brain matter and let set. Paint grey and make bloody. Allen Hopps also has very good tutorials on making brains out of calking and tinfoil, etc. Limbs and stuff are easier to buy at Dollar Stores!