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.
(I love lights.and this is a marriage of lights and centerpieces). "Pretty reception centerpiece - made with silk flowers, an ice-drop garland, white LED lights, a glass vase, and shredded cellophane filler.
Use sheer curtain and hang lights behind for decor or photo booth.Crafty Creations: Booth Backdrop macys macys Martinez If you think you might want to use lights as wedding decor you should stock up right after Xmas when they're on clearance
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