I have included games, puzzles and printables in the Christmas Tree Farm’s Advent Calendar, making them myself when possible. I came across this good Christmas Word Search game but, because of links in it to a games site, I did not want children to do this unsupervised. It is not possible to know where links on that site may lead to.
I am including it here instead and you may even wish to play it yourself as there are both easy and hard modes. As you progress from one level to the next, in either mode, more pairs are added. You can turn the music off via a sound button at the bottom of the puzzle.