Real food and flowers never fail. For a Christmas reception I attended, the hostess had several glass vases and containers that were different sizes and shapes in the center of the various tables. Some were even large jelly jars. These glass containers were filled about halfway with real cranberries and water. She had placed large white roses (the costly part, I suppose, but you could use whatever flower you'd like...) randomly in the various vases. It was simple, yet elegant. The red and white colors were appropriate and festive. Since then, with that idea in mind, I've used lemons and water, as well as grapes and strawberries, for a couple of parties we've had at my house. It seems to catch the attention of my guests and they always comment on them.