I have played a few games listed here... the best was the draw on your head..after everyone was done..oh my heavens..we all laughed so hard. The other one we did, and was a quicker type game. Say the mom to be's name is Kansas City .. you have to name baby related things using the letters in her name. K. A. N. S. A. S. Or you can use the babies name if they know the sex and what name they picked out also.
Ask the guests to write down items they think the mom to be will get as gifts. The one with the most right answers win.