Button Yarn Snowman Ornament: This Easy Christmas Crafts Button and Yarn Snowman uses white, black and red buttons, a short piece of ribbon and a short piece of yarn. There's no glue, no sewing, just lots of fun and easy for everyone.
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.