Use differences that still belong together

Meg Ryan's marble mantel in the reference holds three vases with different colors, sizes, and surfaces. Their complementary character gives the display depth against the cooler stone. A dark vase becomes especially prominent when filled with rich foliage. This shows how a small collection can feel layered without depending on a large number of decorative objects or a perfectly matching set.

Let the stems connect the display to its surroundings

The foliage echoes the botanical character of the nearby wallpaper, tying the mantel to the wider room. That relationship is more useful than choosing branches only because they are described as seasonal. Once the vessels form a considered foundation, their contents can evolve through the year. A change of stems then provides an autumn update while retaining the objects that already suit the fireplace and the room's overall palette.