Today's plastics require oil to make but with the recent surge in oil prices and the negative externalities that result from burning oil, make making plastics a costly action to the wallet and environment. Using all-natural materials that can be found in most homes, milk and vinegar, one can make their own mold-able plastic to fit any needs including making toys.
Fun fact: During World War II, the American army used the same plastic to make windows for their bombers.
Step 1: Get Materials
Get some stuff:
milk, vinegar, a strainer, a heat-safe container, a mold and food coloring