Real Small Art is a really creative project that I've just learned about. From the site:
Real Small Art League is an ongoing effort to inspire random acts of artistic kindness and creative awareness. A growing number of artists make, post, document and give away tiny works in surprise locations. We believe a little work of art can go a long way.You can submit the name of someone who should receive a really awesome piece of art. one of 500. Very cool. Share kindness. Share creative love.
Real Small Art League members only post original artwork in publically approved areas, like community bulletin boards or creative businesses with a mutual agreement.
In 2009, Real Small Art 2.0 began includes posting creative work in geocaches.
In 2010, Real Small Art began Free to a Good Home, sending tiny paintings to nominated recipients.