If you do not already know about the Data Detox Kit presented by Tactical Tech and Mozilla you should check it out. The Data Detox Kit is a insightful and also entertaining way to clean up your data mess – to understand the digital lugage we all leave behind without necessarily understanding how it will impact our future life and decisions. You will clear up your location footprints and degooglise your life. The Data Detox Kit has been translated into lots of languages and hopefully later this year into Danish as well.
Tactical Tech is an international NGO that engages with citizens and civil-society organisations to explore the impacts of technology on society. Tactical Tech. Besides the Data Detox Kit they have been involved in many other projects informing the genral public about the possibilities and pitfalls of technological progress.
They also have lots of concrete ideas and activities to use in a classroom or workshop setting, so if this is something you are considering to do, their website is a great place to start.