I think it is better for students to see things like cross-controlled stalls than to be made afraid of them with scary stories. Demo them at altitude, and your students will get an education, not a list of things to be frightened about. The same goes for simulated engine outlandings to a full stop on a suitable grass field. There is nothing like experiencing this sort of thing. One real-time demonstration is better than fifty videos or CFIs discussing them. It can all be done safely, and your student will have a shot at survival. If you are uncomfortable doing these things, seek a good (maybe old) instructor and get up to speed.