Insert a small vase into a larger one and filled the space between them with coffee beans. The inner vase can hold flowers. Or insert a pink candle into the center of a vase and fill around it with coffee beans.
Jello in a vase and drop flowers in it. Use half the water that jello recipe calls for for more vibrant color. you could use lots of different colors, use lots of stuff to toss in there and use them as centerpieces for any party!
Buy rectangular vases, fake flowers, rocks, ribbon, and candles the width of the rectangle. Glue the flowers to the rocks and fill with water. Float the candle up top. Glue the ribbon around the top of the vase.
you can get the vases at Dollar Tree, 3 bags of rocks and the floating candles in a 6 pack 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!