A veggie platter with humus or ranch dip is always popular, pita crackers and humus, a gourmet artisan thin-crust pizza cut into little squares, mini meatballs, baguette slices with a tapenade or a creamy cheese spread on top, maybe cocktail sausage like Vienna sausages, ham and cheese roll-ups, an imported cheese platter assortment, or a cured meat platters (prosciutto, salami, sorpresatta). Fresh Market has a great assortment of these, but even your local grocery store (here we have Publix) may have some ready-made platters for events like these. You could also check Costco, Aldi or Trader Joe's. I have seen pre-made platters on sale at places like Publix, although you could call and order one to be ready for the evening. You could always just buy a bunch of pre-sliced meats and cheeses and some sausage and cut these, while arranging them beautifully on a plate or tray.