Thanks so much to Elizabeth at the blog, Dream Painters, for suggesting this link.
Here's a game your kids might enjoy with your sub. "Roll A Picasso" and other artist games. Check it out over at Mrs. Humpal's Room.
And here are some worsheets you or your sub might like to have on hand for those early finishers. You can find them at my TeachersPayTeachers shop. Click on each picture to check them out.