Art House Co-op is a pretty cool site, it's a great way to get back into art on a regular basis. They have tons of projects you can get involved in, and they send you materials (for a minimal fee). You can show your portfolio as well as projects you are involved in on your own page. The sketchbook project is going to be a library of sketchbooks in Brooklyn, NY when they are all turned in. Art House Co-op is stationed in Atlanta, GA currently but will be moving to Brooklyn soon.
I still have a long way to go to finish my sketchbook...due at the beginning of January! Wish me luck!