Ever done a spooky party or haunted house where you put your hands in or touch something that you can't see but are told is something scary and gross?
I remember as a kid doing haunted houses and using food and other items as props to freak people out.
For example -
A BOWL OF GRAPES = EYEBALLS
A PLATE OF COOKED SPAGHETTI = INTESTINES
A GLASS OF KETCHUP = BLOOD
A BIG WET SPONGE = BRAINS
PUMPKIN INNARDS w/o seeds = LUNGS, MUSCLE TISSUE or ???
This is especially fun because it gets your imagination going when you can't actually see what the items are and all you can do is touch them and feel the texture.. Having a "tour guide" take you through the items will help make it scary, and they can describe the items or a story to go with each item while the "tourist" is blindfolded. Or the items could be concealed in boxes with dark cloth so you put your hands in the box but cannot see what the item is.
HAVE A SPOOKY AND FUN HALLOWEEN !