A flower in a jar. I do it all the time, especially when all the other flowers in the bouquet are dead except for the little mum that hangs on longer than all the rest. But what was most interesting in this setup was the way the light refracted through the water and glowed on the backdrop. That was the very brightest spot in the whole composition. With that lying very close to the almost black stem and leaves, it made a nice contrast. Visual interest is fun to look for even in the simplest scenes.