25 years ago, the Berlin Wall fell and sometime around then, I got this art piece in the mail from Germany. Dust from, I assume, the wall enclosed in plastic at the center of the photo. Back then, I was participating in a grassroots network of pen pal artists who sent creativity to one another, sort of like the sharing that ordinary people are doing today on Facebook. Back then, there was no Facebook and the art traveled through the mail. It is called Mail Art. Some people still do Mail Art.