i was watching market kitchen on tv the other day and they were on about a game. all the people at your party wear a tag on string around their neck, and the host has to choose one or two words that can not be said all evening ( yes or no - for instance), people engage in conversations with other people and if they use the words not allowed then the person has to give up their tag to the other person, the person with the most tags round their necks at the end of evening is the winner. you could change the words every hour to make it a bit more interesting. even kids can be involved in this if there are any at the party!!!!!!!!!