Who else remembers GAK?

Does anybody else remember this awesome invention? I made some homemade with my son and fiance tonight! I remember making this in 6th grade with a ton of Elmer glue and borax. I still remember the name till this day. And so I looked around online until I found how to do it and made sure to get the recipe right! Here it is if y'all are curious:

In a large container combine and mix:
1 ½ cups very warm water
2 cups Elmers white glue
A few drops of water color and/or glitter if using clear glue

Make sure this combination is completely mixed
In a small container combine and mix:
1 1/3 cups very warm water
2 level tsp 20 Mule Team Borax. Adults, please do this step.
(Please see NOTES section below for safety information about Borax.)
Make sure the Borax is completely dissolved.
Combine the glue and borax mixtures:
Mix well using your hands until all the liquid is absorbed. You may need to squish, mix, and break up the gak to get it fully combined. Store the gak in a plastic, air-tight container at room temperature. For best results, measure precisely and mix well as noted above.

It makes this totally awesome gak stuff that bounces off of itself by the way. We used blue color dye for ours this time. It was an absolute blast! My son enjoyed it, and we took a few videos and pictures of our playtime with it. Has anybody else made this? Do tell of your favorite experience with gak!