Here is a brilliant learning idea that comes from England.

Students were given the task of working with their teachers to create films to teach other students about science ideas and principles.
See some of these films here: http://www.filmsforlearning.org/index.html

So let's take this idea and adapt it. Basically these students are making films of a good enough quality to be used in another lesson. Why not try the same thing with training. Open up your topics to your students and the best of the best will be shown at future training sessions.

Make take a bit of legwork and some forward planning, but what a way for students to make their marks.