I've always been a fan of petite centerpieces with flowers of all one color. White flowers are a particular favorite - the beautiful scent from these stock filled the entire room.
I'm also a fan of mercury glass and actually use my mercury glass votives as petite vases. To protect the finish of the votives, I tuck in small plastic sandwich bags to hold the water. Once the water is added, I trim the bag so it's hidden from view once the flowers are added.
For a dinner party on Saturday, I lined the petite arrangements down the center of the table and placed tea light candles in between each one. I love mixing the iron tea light holders, and copper chargers with the mercury glass.