Have the host draw a bingo card (a box with 5 boxes across by 5 boxes down) leaving the boxes open and make enough photo copies for everyone attending. Before the gifts are opened, have everyone personally fill in the boxes with things they think the mom-to-be will get. As the presents are opened, each guest should cross out the appropriate box(es). (For example, if someone wrote down bodysuits and baby clothes - they could cross off both when the mom-to-be opened a outfit with a matching bodysuit.) The first guest to have all her boxes covered/crossed out is the winner. If at the end of the present opening, no one has a "bingo" then the closest one is the winner.