AWESOME, CHEAP Centerpiece/Favor Idea

I found this idea on a website and plan on using it for my wedding! Buy floating candles in a specific shape that goes with your theme (or colors to go with your wedding). Buy one candle for each guest. Set bowls of water in the center of the table with the floating candles in them, and use them as the centerpiece. When the reception is over, everyone can take a candle with them! Ideas to personalize it include having preprinted ribbons with the bride and grooms names and wedding date on it, or using an etching tool to inscribe that info on the base of the candle and filling in what is "engraved" with paint to make it stand out.