There are few things more attractive to a 10-year-old boy or girl than something gooey like flubber. Flubber is a slimy silly putty. Flubber has a few other names, such as gak or slime. It is easy to concoct, and is fun to handle and to use to play jokes on unsuspecting adults.
Mix the 2 cups white glue and 1 1/2 cups of warm water together. Stir them until they are thoroughly blended and make a pale milky liquid.
Add your food coloring. The more you add, the brighter the color will be.
Mix the Gain and the rest of the warm water together in a separate bowl. Use a different spoon to stir this, and make sure that the Gain and the water are thoroughly mixed.
Combine the two bowls of fluid. They will make a light blue or purple milky mixture unless you have added food coloring. Then they will simply remain whatever color you dyed the glue and water.
Continue stirring steadily. Do not slosh the liquid, but keep stirring in an even manner. The two liquids will become semi-solid as you stir. After 10 or 15 minutes, you should have a good yield of flubber to play with.
If you want to make your flubber even more interesting, you can add glitter or small sequins to the mix to make it sparkle.
Never mix anything without adult supervision.