Time, I feel, for a board game!
This one helps your students to complain using English. Let's face it, we complain all the time. We complain in restaurants and bars, we complain in banks and at airports!
Each square contains the start of a phrase we use to complain, all they have to do is finish it off with a genuine (or made up) complaint for somewhere they have been. It might even be a real life complaint they have heard or made themselves. It's great for advanced teens and adults and groups of almost any size. And, of course, it's photocopiable!