Mistaken item

• In groups of 3, each group is a different profession. Research what they do in their jobs, trying to include interesting facts and some less known practices.
• Prepare a document or a photo collage with 10 items related to their jobs without saying it. They should also include one object which doesn't belong to the profession chosen. The rest of the class has to guess which is the mistake and the job.

Source: CC Dierk Schaefer