More to explore:
Come Together Kids: Use Chalk to Color Salt for Sand Art ~ It's way cheaper than buying several bags of colored sand, plus it's fun to make!
Stir stick lampshade
Dye salt with colored chalk, then make "sand" art
paint stirring sticks sunburst mirror
Summer Fun Bucket List
Seems easy enough.
Rainbow in a Jar - Salt & chalk
An easy project - would make a good gift!
Come Together Kids: Use Chalk to Color Salt for Sand Art
cool art project
Letters from paint stir sticks