Buy 3 different sized clear cylinder vases, a bag of white/tan rocks (or just pick some up outside), 3 fern leaves, 3 flat round candles in either a light green or tan color, lastly fill with water! All these items can either be bought at Michaels
Beautiful center pieces or just around the house- rocks, flower of your choice (maybe string it to a rock by the stem so it doesn't float) in a vase, fill with water, add small candle and voila-on the mantle?
Mini Candle Arrangement with Moss and Rocks. Here's a no-fuss table arrangement that's simple and appropriate for many occasions. Rocks and bits of moss nestle around small candles in tiny flowerpots. And best of all -- no flowers to keep fresh!