In a bowl add the whole bottle of Elmer's glue and 1 full glitter glue pen (which ever color you want to)
Next using the spoon mix them, mix it well so the glitter is all thru out the white glue.
Then mix in 1/2 tablespoon baking soda and mix well.
Add about 2 cups of shaving cream. You can measure it or just eyeball it but when you mix the shaving cream in you want it to take away the gluey feeling and make it fluffy with out adding to much shaving cream. If you start with adding a cup worth then add 1/2 a cup worth at a time until you have it where you need it.
Stir until all the shaving cream and glue is mixed well, it will look like a sticky glob that is also liquidy.
Next add in your saline solution. Start with a little by squirting it from the container into the mixture and stir. Continue adding saline solution and stiring until you get to the slime consistency that you want.