75. Create community murals, and make preserving them a priority. Public art can illuminate a street, but protecting the work over time can truly define a neighborhood and foster creativity and talent. Philadelphia’s iconic Mural Arts Program, which started in 1984 and turned the city into a street art mecca, includes a restoration initiatives, to make sure creative expression is prized and protected. In Denver, Colorado, Crush Walls is an annual urban art festival that transforms the street walls of the city’s former industrial neighborhood.
Murals make a great addition to any neighborhood. You don't need an expert or expensive supplies. It's nice to have those, but you can do just fine with your best local graffitist and their box of spray paint. Learn how to paint a mural. You don't feel like a painter? ("Then by all means, paint! And that voice will be silenced.") Make it abstract. A favorite is tape painting.
Two notable examples from my writing:
1) Most towns in Terramagne-America have a municipal artist. Muralists are popular among these. Big cities have more than one, usually in different styles of art.
2) Over in my main science fiction setting, Picture This: The REAL Artists' Colony has two styles of building. One is elaborately shaped. The other is flat and plain, intended as a canvas for murals.