For a fun Halloween party setting be sure to give your guests an assortment of treats (both sweet and savory) like candied apples, assorted nuts, a gourmet cheese platter, cured meats, and other easy to bite crostinis and stationed bites.
Offer alcoholic and non-alcoholic drinks like witch's brew (think a dark punch served up in a bowl inside a black cauldron), coffee and tea, and wine/beer and an assortment of drinks guests can serve up easily. Stock standard bar accoutrements like cherries, tonic water, Coke, limes, corkscrews, fun Halloween napkins, and ample ice. Surround the bar and buffet with dry ice to give an eerie effect. Happy Halloween!