Sand Dough
You will need:
1 cup sand
1/2 cup cornstarch
1 tsp. alum
3/4 cups of water
Stir together sand, cornstarch, and alum in saucepan. Add the water and stir until it is smooth and cornstarch has dissolved. Cook dough over medium-low heat stirring occasionally. The dough will start to thicken within a minute or two. Scrape mixture from sides of pan while stirring. After 3 minutes the dough will be the consistency of playdough. Remove from pan and let cool. The sculpt away! The clay will take about a week to completely dry.