Floating Flower Tip - Most flowers float pretty well on their own until they start to pool with water and slowly sink. For a longer lasting centerpiece, use bubble wrap to make little skirts for your flowers.
Beautiful idea for Christmas or holiday decor, a lighted pinecone branch centerpiece using clear vases, lighted branches and pine cones. You might even be able to find special lighted pinecones that are already on the branches. From Trendy Tree.