Fill
The Sketchbook Project is a unique Brooklyn-based global arts initiative that’s been operating for the past ten years. Anyone who wants to participate buys one of their pocket sketchbooks. You fill the book up with your art, send it back, they scan it and make it available online. It also goes into their collection (now over 33,000 volumes) which the public can access, and there’s even a mobile museum touring the collection.
I haven’t heard of this before. Really cool project.