cheese and cracker tray or can cube or make cheese ball bites served with 2-3 types of crackers, fruit and vegetable trays, various skewers such as tiny tomatoes and cheese, ham n cheese, salami n cheese;, or green and black olives with tiny tomatoes; deli can thinly slice baguette then add flavored butter such as honey butter, delivered pizzas cut into bite sizes, cucumber slices topped with yogurt and tiny bit of dill or tomato, petit fours, slice bakery cakes,, lemon cakes,, pound cakes,, brownies into bite sizes, Little Debbie Mini Muffins or Brownies, sliders of pulled pork (can buy by the pound from Sonny's, add bagged coleslaw with bottled coleslaw dressing), trays of 1-2 oz clear cups filled with instant pudding, nuts, or spiced snack mix using chex, etc
Depending on the style of event, can place food on doilies or beds of washed, throughly dried lettuce with rosemary, then put in baskets, trays, cutting boards.
For serving tables,, can turn baking pans bottoms up, cover with a couple of colored cloth napkins, then place serving trays on top. It will depend on the size of the serving tables as how many stations can be raised. Usually elevate about half of the trays and stagger others on the table.