Le petit bac is an easy game to play to build vocabulary. Students really like to find the words. It is better with classes who have a sound grasp of French because you need a passive vocabulalry to draw on. Le petit bac en ligne will give you 7 random categories and the letters you need for the words. The first to finish is the winner. it’s a good filler activity but you need at least 15 minutes. The petit bac site gives you the categories and the letters and students can then do it individually on a computer or you can put it on the board and work with it as a class. This site offers other quizzes but you need to have a good grasp of French and French culture to complete the activities. It’s a sound knowledge builder. My senior students really responded well to this game.