crafty
Reused Billboard Vinyl | Billboard Tarps
This is one of the best prices per ft².
Street Chalk Recipe
This is the for-serious version, involving pigments, beeswax, boiled linseed oil, marble dust… SERIOUS stuff. I’m not sure if my new hobby will last long enough to justify the investment, but I’m tucking it away here just in case.
Making Your Own Sidewalk Chalk – The Simple Dollar
I’ve been disproportionately running out of black chalk (I do a lot of outlines and drop-shadows) and it’s silly to keep buying full sets for one color. Plus this way I can also make brown-grey.