So liquid sidewalk chalk is just like sidewalk chalk, except you apply it with brushes (or leaves, if you’re Simon and feeling imaginative). It’s easy to whip up a batch and lots of fun to paint with. You can find the recipe on many different blogs (I found mine here by way of Pinterest).
1 part water
1 part cornstarch
Mix up the water and cornstarch. Pour it in muffin tins or small cups, and add food coloring. I left several cups white, but, of course, all the colors eventually got mixed together.
In keeping with my new addiction to natural dyes and because I was almost out of food coloring, I thought I would try to make a few natural colors. Turmeric produced a nice yellow, but for some reason the paprika didn’t mix very well (to make red). I think next time I will try the natural coloring by preparing the color in the water (like you would to dye eggs) before mixing the water with the cornstarch; I imagine the colors will be really muted, but I could be surprised.