Wash the strawberries, blueberries, and raspberries, then pat them completely dry.
Hull and halve the strawberries. Cut brownies and larger desserts into bite-sized pieces.
Place the vanilla frosting, cream cheese dip, or fruit dip into small serving bowls.
Arrange the bowls on a large serving board, spacing them around the surface.
Add the brownies, cookies, cupcakes, and other larger desserts around the bowls.
Arrange the strawberries and raspberries throughout the board to create pops of red.
Add blueberries and blue candies in small clusters around the desserts.
Fill the remaining spaces with white chocolate, marshmallows, yogurt-covered pretzels, and other white treats.
Add red and blue candies to any empty spaces.
Finish with optional star-shaped cookies, sprinkles, or other patriotic decorations.
Check the board for a balanced mix of red, white, and blue ingredients.
Refrigerate perishable components until shortly before serving.