As a kid I always enjoyed a 'Fill-in' the blank activity. Those type of activities have changed, and for good reason. The 'old' type of fill-in the blank activities were probably based on prior knowledge, or fun questions that your teacher was asking.
21st Century 'fill-in' activities can/are much more complex and should incorporate effective search techniques to build the search capacity of your students. The Learning Network had a fun October Events in History 'fill-in' activity.
You can either use the scrambled words at the bottom of the article, read the archived article from history, or I would recommend a Google Search to find the answer. Either way, this activity teaches Relevancy Skills for your class.
Enjoy....and also build your own fill-in to boost your students search capacity!