The girls had a blast yesterday painting our driveway with sidewalk paint that we made ourselves. It is easy, and best of all, super cheap!!
You just mix equal parts of cornstarch and water and add a little food coloring of your desired color and you are ready to paint! I have a few of my 'not so nice' paintbrushes that I dedicate for sidewalk painting.
When you first paint it on the colors are dull but as it dries they brighten. It just washes off like regular sidewalk chalk. Yay for cheap entertainment!!