A mini raw bar is a colorful way to present oysters. Line a large 2-inch-deep serving dish with chopped ice. Beg some seaweed from your fishmonger or use fresh rosemary, and arrange it over the ice. Place freshly opened oysters decoratively over the seaweed. Garnish with lemon wedges and a few pretty flowers. Place small bowls of the five sauces around the platters. Be sure to place a bowl nearby for shells.