Type of Game: Baby Shower Party Game - Baby Blanket
Equipment: Flannel blanket and Fabric Markers
# of Players: 5+
Description: Buy a flannel baby blanket, and some pastel colored permanent fabric markers. You might also want an embroidery hoop, to help hold the blanket tight.
During the course of the shower, pass around the blanket and markers and let everyone "autograph" the blanket, draw, or and add any comments for the "baby to be".
You could have this done before the shower and surprise the mother-to-be.