Glue fake flowers to the bottom of a tall vase (or to stones you could drop in), fill with water, and top with a floating candle. Gorgeous and you could use any color to fit the room you put it in :) love this
you can get the vases at Dollar Tree for $1 each. 3 bags of the rocks at $1 each, and the floating candles in a 6 pack for $2.99 at Hob Lob. With a super gorgeous orchid as the flower, in the colors of the wedding, you've got yourself a very pretty, and very thrifty centerpiece!