Something I guess kind of fits with this is doing seed-bombs, we used to do that a bit when I was young. You basically forcefully plant colorful flowers in plac

Something I guess kind of fits with this is doing seed-bombs, we used to do that a bit when I was young. You basically forcefully plant colorful flowers in places that are not so colorful. Coolest thing we managed to get the flowers growing at was a roof where you could just barely see flowers on the top corner of the building.