The Bell Game
Give your guests each a ribbon necklace when they arrive at the shower. On each ribbon is tied a tiny little bell, or other wedding themed trinket. As you help tie on the necklace, explain the rules of the game: she can wear the necklace until it is taken away by another guest!
Another guest can take the necklace when she mentions the bride or the groom by name! The guest with the most ribbon necklaces when it comes time to serve dessert is the winner!