J.L.
I was at a shower where we played "Estimated Time of Birth". You get those plastic babies that you buy at the craft store and freeze them into ice cubes. Then, each person gets a cup with their baby ice cube and writes on a card the time they think their baby will be "born". The person closest to their time wins. I've also been to showers where the play a Price is Right game with baby products. For instance, how much does a pack of diapers cost. Whoever gets the most without going over the actual price wins.