Spend one day a week car free, motorcycle free and basically anything that runs on fossil fuels
Why is this important?
The world is going to s*** and we're destroying it at an alarming rate what I'm proposing wont stop it but its a very small step in the right direction and in the mean time it might help slow things down while someone smarter than me comes up with a real solution and if we go fume free on a Sunday it'll make the least upheaval to things like buses, postal service and the like