More to explore:
Colored Chalk Sand Artwork
What do you do all day?: Chalk Coloured Sand Artwork
Coloured Chalk Sand Artwork
dye salt with colored chalk, then make "sand" art--I used to do this with my kids, so fun!
12 Easy Beginner Toddler Crafts. This site also has a few other neat things to look at too to do with the kiddo's!
Perfect for the 4th, could change colors around for other holidays. So pretty!
Craftulate: Powdered Chalk Spray Painting - Fine Motor Fridays
spirographs for sidewalk chalk
Don't let the rain get you down! Chalking in the rain with chalk and paintbrushes
Have some creative fun (and some playful literacy too) with an easy, indoor, water painting activity!
How to Make Chalk Paint :: not the chalkboard type of paint, it's like the Annie Sloan chalk type of paint! cool...tutorial.
DIY Chalk Paint (something to do with the leftover chalk bits!)
Learn with Play at home: DIY Chalk Paint