Empty one entire bottle of Elmer's Glitter Glue into the plastic food storage container or a disposable plastic bowl.
Fill the Elmer's Glitter Glue Bottle with ¼ cup of warm water. Place the lid on and shake the bottle until most of the glitter glue has dissolved. Pour the watery glitter glue into the bowl and mix until combined.
In a separate disposable bowl mix 1 cup of warm water with 1 teaspoon of borax. Mix well until the borax dissolves.
Pour the borax water into the bowl with the glitter glue. Using a plastic or disposable spoon begin to mix the borax water into the glue. The glue will almost immediately begin to separate from the borax water. Mix until the glitter glue begins to get rubbery. Use the spoon to scoop the glitter slime from the bowl and place it on a clean surface to knead. Do not discard the remaining borax water yet.
Knead the glitter slime for about 5 minutes or until it becomes less slimy. If the glitter slime is sticky drizzle about a teaspoon of the borax water over the slime and knead it in. Repeat adding more borax water until the glitter slime comes to the texture you like.
The slime should not stick to your fingers in streams as you knead it.