To make homemade goo for kids, mix water, glue and food coloring in a bowl, then add the mixture to another bowl containing hot water and borax. Gradually add the glue mixture to the borax mixture, and pour off excess water.
To make homemade goo, also known as flubber, combine 3/4 cup of water, 1 cup of Elmer's glue or liquid school glue and a few drops of food coloring into a large bowl. In another bowl, mix 1 teaspoon of borax with 1/2 cup of hot water. Once the borax is completely dissolved in the water, begin to add the glue mixture to the borax mixture. Drain any extra standing water, and mix thoroughly. Knead the goo with your hands until the water fully absorbs.
Store the goo in an airtight container when not in use so that it does not dry out. Exercise caution when using borax, as it causes eye irritation and should not be ingested. If you are adding food coloring to the goo, wear gloves so that the food coloring does not stain your hands. Goo recipes produce an elastic material similar to Play-Doh that can be stretched, cut and bounced. Use vinegar to help clean spilled goo that ends up on hair, carpet, furniture and animals.