Different kinds of shredded cheese (maybe cheddar, a bleu, pepper jack and maybe goat or Gruyere or feta)
Sour cream with a few different kinds of freshly chopped herbs (mint, cilantro, green onions, basil)
Multiple kinds of salsa (along with sour cream and/or cottage cheeese or plain yogurt) Maybe a Pico de Gallo, and a Fresh Tomatillo Salsa and maybe a Chipotle Salsa
Or for a Southwestern flair, maybe some Cowbooy Caviar
Ricotta cheese and marinara sauce
Homemade or store bought Pesto
For warmer things, especially if you have one of those warming hot plates, or even a few small chafing dishes (even the disposable ones with a foil pan with a sterno under it) you could have chili, both meat and vegetarian style, Portobello Mushroom Wine Sauce, nacho cheese sauce and sliced jalapenos.
For something a little more exotic, you could have some kimchee (Korean fermented pickled vegetables, usually cabbage).
Or for something that is somewhat traditional, but just a little bit different, check out these different kinds of herbed and flavored butters like These
And now, it’s dinner time so should I say ciao or chow?