I did a quiz for the 2 hen nights I've been to. Make up some questions about her partner, and ask him the answers. Things like who would you be if you were a super hero, what thing scares you the most. Then you make up other answers so it's multiple choice. Give out envelopes containing questions to all the other people at the party, and get 1 prize per question. Each person asks their question, and if the hen gets it right, she gets a prize, and if she gets it wrong, the person asking the question gets the prize.