cream of tartar is a powder ingredient that 'should' be fairly easy to find at the grocery store.
wish i could help, i have a really easy recipe but it involves the stove AND cream of tartar!
actually, i guess if anyone else is interested, here it is. you can add whatever color you want. the parents had to take turns making a fresh color batch every month at dd's preschool. it really was very easy.
Stir together: 2 cups all-purpose flour
1 cup salt
1 Tbsp. plus 1 Tsp. cream of tartar
Add to the above: 2 cups water
2 Tbsp. oil
Food coloring to make vivid color.
Mix above on medium heat until dough pulls away from sides of pan. Turn out onto board and knead to get lumps out. Store in airtight container.