My children noticed that my latest package of Expo dry erase markers included the phrase "Safe for Windows".
Them: Mom, can we write on the windows?
Me: Only if it's educational.
Voila! Here is their Classical Conversations Foundations and Essentials memory work for Week 2 initiated completely on their own. FYI - we draw lots of pictures to help us remember all the information that we memorize. An added benefit to this new system is perhaps my patio sliding doors will now be cleaned more than once a season.