Jones-
If you realy want it to be different, don't use any backdrop. Think outside the portrait box. Try window light and a natural background. Generally, I don't think studio lighting is very complimentary. Window light is wonderful, though. And I love photos of people in their natural environment. What about a photo of the baby in the mother's arms, next to some directional window light? Use a reflector to fill in the shadows. Do some tests and see what you think.