Every year my school does a thing called "Wellness Day". Teachers teach each other about stuff like golf and painting and stuff. This year the school gave me the go ahead to teach a class about shaving with a straight razor and or a DE. I figure I can do a bit about environmental impact of plastics, a little history and then a demonstration of how its done. I even have a shaving mug and brush to give away as a door prize. (Glad I have a bunch of dull project razors that the people can handle and mess with.)

Any tips for stuff I should mention or show off?