Use Hershey's Kisses or little plastic babies at a craft store for the game pieces. 15-20 game pieces for each guest. During the Baby Shower, hand each guest a bingo card and 15-20 game pieces. as expectant mother is opening her gifts, guests place a game piece on their card if the gift is on one of the squares of their Baby Shower Bingo card. Keep playing until all gifts are open. Give prizes.