Check off each word or phrase when you hear it. When you get a whole row, column, or major diagonal, shout or otherwise signal that you've won. Re-load this file to get a different board. If at least 3 of the squares you use to win have been checked off twice each, then your co-workers have to buy you lunch. No cheating, you probably don't need to.
Based on an idea here. Printable forms for many other games, graph papers, etc. are available here.