Patti Wigington, over at About.com, shares a candle ritual to honor Imbolc:
Hundreds of years ago, when our ancestors relied upon the sun as their only source of light, the end of winter was met with much celebration. Although it is still cold in February, often the sun shines brightly above us, and the skies are often crisp and clear. As a festival of light, Imbolc came to be called Candlemas. On this evening, when the sun has set once more, call it back by lighting the seven candles of this ritual.