I have a space in my house where I light a candle if I know of a woman in labour who needs thoughts and support. If my boys see a candle lit there, they will ask after the woman and her baby, and we will often send thoughts and love to them as we sit down to eat.
In class we talk about lighting candles, and very often a woman will send a text or e-mail to her friends from the classes when she goes into labour, and they will light candles for each other.
The act of lighting a candle focuses our attention and awareness on our friend's labour, and allows us to bring a physical representation of our support and solidarity into our homes.
Many women have said that they thought of the candles burning for them in their friends houses, and that it gave them strength and comfort in labour.