I have some free pages bookmarked; fantasy art. It's good practice for painting, too. I'll use my water colour pencils. Wanting to do some sci-fi fantasy stuff, and I can experiment with colour mixing and technique. I usually do butterflies, flowers, and comic book art, and the fantasy art is going to be different, especially with light effects and the pictures in my head.(which is a scary place to be, at times hehe).
Also, depending on the paper / card stock you use for printing, you can use other media, like acrylics, water colour washes, etc. Even traceable onto canvasboard, if you want to use oils.
And I have a new box of Crayolas that I am dying to use! : P
EDIT: PF, I do that with the weekend newspaper. B&W ads, etc. After the crossword is done, doodle some of the pages. yup.