I have also seen similar centerpieces that use epsom salts instead of sugar. You could also sprinkle a mix of pearls/gems. Sand (or sugar), faux pearls, a 3 candle. An easy DIY wedding centerpiece idea.
For a simple yet stunning centerpiece, place five votive candles (in a variety of Christmas colors) in a line down a red rectangular serving dish. Fill the rest of the dish with cranberries, garnish with a few pine twigs and dust with artificial snow.