Match up cracker joke questions with answers
Attached list of jokes
In 2008 the Sunday Telegraph carried out a comprehensive analysis of Christmas cracker jokes
The attached list is based on the article linked above.
Cut up the lists, give a set to each patrol and challenge them to match up the questions with the answers.
You could set a time limit (e.g. 10 minutes) and then check the results, or see who can match all the questions and answers the fastest.
You could give the winners a mince pie or a set of real crackers to pull.