Consumption – I buy very little stuff in general and I wear my clothes until there's holes in them. Sometimes I do buy electronics that I for example need for work or studies, but even then I try to buy a part for my computer like a graphics card, rather than replacing the whole thing.
Food – I eat vegan when it's possible and otherwise vegetarian. I also try to avoid for example avocados!
Flying – I fly very rarely. In the future I hope this will become the norm and people who still want to travel a lot will do it more in a "Around the World in 80 Days"-style!
Transportation - I don't even have a drivers licence, but I know I'm privileged with public transport as I live in Helsinki.
Electricity and heating – I live in student accommodation which means I can't directly impact my electricity contract, but this is a great example of something you can impact in the student union and eventually get renewable energy for all student accommodation!