Bridal Bingo
There are many fun variations on this game.

The most popular is this one: the host pre-fills out bingo cards with things the bride likes, and then has her draw either the items themselves (if they are small gifts) or slips of paper (if they are things like places she has visited, her favorite color, etc.).

Variation two is that the guests fill the cards out themselves with presents they think the bride is likely to receive, putting their own present in the free square in the middle.

When a guest has a matching square with what the bride has called (or opened), she can cross it off; five in a row, across or diagonally count as Bingo! Give a door prize to the first winner.