I have always thought that windows are prime real estate for controlled mess-making art and I've been lucky to have over-sized windows. I've tried Crayola finger paints but it's a mess because it can drip even if you use a brush to paint it on the window. So finding the Crayola window markers at Walmart was very exciting! At $9 it is not that expensive and a whole lot of fun for my almost 4-year old twins, though I'm sure my 6-year old will also love it. The pack comes with 25 markers, many stencils and 2 sheets of static cling stickers that can be colored in. Clean up is easy with a damp paper towel.