One of my favorite dishes I made for the party was edible brains.
I cooked buckwheat noodles (rinse them under cold water) then tossed them in a marinade (soy sauce, sesame oil, hot chili oil, sesame seeds, rice vinegar, finally chopped scallions, garlic, ginger, etc).* Then I put the noodles into a brain jello-mold (spray light coat of oil for easy removal). I let this chill in the fridge for several hours. The brain popped out and held its shape. It looked pretty disgustingly real.
*For marinade, I typically use around 1 tablespoon agave, 2 teaspoons of chili sauce, 2 teaspoons of toasted sesame oil, a few shakes of hot chili oil, 2 tablespoons soy sauce or tamari, 2 tablespoons rice wine vinegar, 1 tsp of ginger, 1 tsp garlic powder, a few shakes of sesame seeds and a couple of scallions finely chopped. This is really approximate, as I usually make my marinades from scratch and just throw stuff in a bowl and taste as I go.