Depositing random pieces of plastic in places where they do not belong is generally considered littering, except when it is considered art!
German artist Jan Vormann has been traveling the world for the last six years, filling in gaps in crumbling buildings, streets, and bridges with Lego pieces. I would not call him a chronic litterer, but I would call him a better citizen than most people. An interactive map on his website displays snapshots from the nearly 40 cities he has visited in the US, Europe, Central America, and Asia. It’s possible you have already heard of Vormann and his incredibly joyful eccentricity, but I stumbled upon him merely this afternoon, and he has already made my life measurably better.