She whipped up a batch of doughnut-shaped chalk in her kitchen and now sells it in 350 stores in the U.S. and overseas
For an Epiphany blessing, chalk the door with 'holy graffiti' – Episcopal News Service
Amazon.com: The Complete Book of Chalk Lettering: Create and Develop Your Own Style - INCLUDES 3 BUILT-IN CHALKBOARDS: 9780761186113: McKeehan, Valerie: Books
Old Master Drawings: Museum and Academy Collections
Outsville Great White Billiard/Pool Cue Chalk - Gray - Single | eBay