Cylinder floating candle vases are the most popular choice for table centerpieces right now.  They are beautiful, versatile, and can be purchased in bulk quantities.  Cylinder floating candle vases are a little more than 3 inches in diameter, so they perfectly accommodate 3 inch floating candles.  These can be used as shown, with only candles, for a simplistic style.  For a little more creativity, submerge fresh flowers, vase gems, fruit, or berries in the water.  There are tons of things that can be used for vase fillers.  The possibilities are truly endless with such versatile cylinder floating candle vases.