To create your show-stopping bagel board, start with a large serving platter, wooden cutting board, or a sleek slate or marble board. Spoon the cream cheese and other spreads into small bowls and place them on the board first. Next, scatter fresh dill across the board, then artfully layer the smoked salmon and tinned fish on top. Arrange the onion, radish, cucumber, tomatoes, capers and lemon slices in their own little sections for a pop of color and flavor. Finally, add the bagels directly to the board—or serve them on a separate platter for a touch of elegance.