Kid made art is my favorite. Soul and Glow worked on some art pieces for their room and I love the results. Glow did that black & white self-portrait with acrylic; Soul did those primary color shapes drawn with colored pencil. Her piece sort of reminds me of Kindah Khalidy, which I should probably show them because I know they would just be enamored with her use of color and shape. With some of the other school subjects, you might have to twist their arm to do, but art... never.
I've got some other art study ideas swimming in my brain, so I can't wait to try them all out this year! Being able to explore and cater their learning to their interests (and mine) is one of the joys of homeschooling.