I've had the same dilemma with an eight year old boy.
We live in the Kansas City area. They have a great resource library at the Nelson - Atkins Museum of Art for art and history teachers. The museum has two people on staff that spent time with me an a few HS moms explaining their free resources. It is wonderful to work with them. I coordinated several of our history and art projects.
Last September our small HS group checked out the Arch Dig module from the Art Museum. It was really fun for all ages. That would have been a great art project for STOW 1.
They have art hands-on, theory and history books, DVDs and posters of artists from many different time periods and styles.
I got some of my best ideas from their catalog of elementary art classes. These classes were easy to implement. One idea was an animal scavenger hunt. Look for animals in paintings and sculptures in the museums.
I find history and faith are important components in understanding historical and comtemporary art. Art is a statement by the artist about themselves, their God and the society the he/she lives in. It is difficult to separate these ideas and understand art.
Also, we started using Draw Write Now in the penmanship portion of our school day. The Art Instructor told me that not all art requires fine motor skills and drawing. You can make paper with screens, old blender, old newspaper, food coloring, twigs and flowers from natures hikes.
Hobby Lobby has introductory water color and oil painting books also.