Right now at Walmart you can grab this Crayola Washable Sidewalk Chalk Set, 48-Colors for only $3.70.
This washable sidewalk chalk features thick, square barrels for comfortable grips and easy storage. The points produce fine lines as well as broad strokes that simply wash away with water once creations ready to be washed away.
Square shape won’t roll away, AP certified non-toxic, Recommended for ages 4 and up