Makes me wonder if these individuals have cracked the Elmer's Slime recipe.
https://youtu.be/8bM24LQ4x_4
Id be curious if anyone has ever messed around. From what little I understand the substance (depending on how you make it) is very light and very buoyant.
And it shouldn't spoil, it can be saved as is for a long time, and is super squishy.