Polar FLE has a fantastic activity which you can do with students who have done French for a while. It is also suitable for brushing up your French. The story runs in 4 levels and each level has the text, the audio text and exercises to practise grammar and vocabulary in the text. it is really well thought out. Students enjoy it and will work through the exercises because there is a reason and purpose. I am using this next week because it has a good exercise on the subjunctive and that is something you have to make meaningful to students.