It comes down to having fork-tender baked potatoes and a wide variety of toppings to choose from. Making it easy for guests by either grouping ingredients based on theme such as "Mexican" or "Southwest also helps. Lastly, arranging the potato bar properly by setting the larger toppings at the beginning and smaller ones like green onions and chives at the end make the bar flow easily. Don't forget to use serving spoons and forks for each topping too.