I did this for a hacker space workshop many years ago where I converted a raspi into a wifi router that performed MITM attacks. So I had all the participants i

I did this for a hacker space workshop many years ago where I converted a raspi into a wifi router that performed MITM attacks. So I had all the participants in the workshop connect to this free wifi network at the beginning, because it was available and it was free internet while you were there. Then at some point during the workshop I had them all visit like facebook without https (you could still do that then) and they were greeted by a poem instead. This was a workshop on how to protect yourself in daily online life. So the basic tricks like use https, check your browser, bla bla.