Gluten free play dough recipe

I came across a wonderful recipe for "traditional" play dough that can be made gluten (wheat flour) free. Here is the link.

Here is the recipe:
Ingredients:
2 cups of baking soda
1 and a half cups of water
1 cup of corn starch
Directions:
Mix with a fork until the mixture is smooth and boil until thick. Takes about 4 minutes.
This has become our favorite recipe.