Ghosts for a Front Entry - plastic bowls with drilled holes in the bottom, turned up-side-down and threaded to the ceiling secured with duck tape; and use cheese cloth or white fabric with felt faces secured to them :D
Mummy Toast: This is so easy! I would toast the bread first and then assemble the mummy. Spread on a layer of pizza sauce, arrange hard cheese so that it resembles mummy bandages and hide in some black olive slices for the eyes.
Spooky Spider Eggs: Make your favorite deviled egg recipe. Cut pitted black olives in half lengthwise & nestle one half on top of an egg for the body, & then cut the other half crosswise into thin slices to form the creepy legs.