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.
Orange-o-lanterns! (No link, just wanted to remind myself of the idea). Cut the top of the orange, hollow out (be sure to not cut lining too thin or it'll melt your candy). Make faces for the oranges and fill up with goodies!