I got a glass vase, first put some small stones (they can be of any color) in it and place a red color hibiscus flower . Then pore water into it upto the brim. A small candle (or diya) on top of the water will bring out the beautiful colors from the vase.
People who celebrate Diwali, can put few more small diya's around the vase to make it bright.
Hope you enjoyed it !!