I bought this magnetic Goo considering doing magnetism experiments with my students. I saw several interesting videos about her.
Inside the box we have the Goo, in a plastic casing, and a metal box where you keep the toy.
In metal box there is a fairly strong neodymium magnet.
The slime seemed more malleable in the videos. It has the consistency of play dough to model.
If you put the neodymium magnet on top of Goo, the force of attraction pulls the magnet inside. Interesting!
The slime can be modeled to be the format that you want to.
Look at how you can model the slime:
The slime is ferromagnetic, IE, is attracted by magnet.
Interesting, but I thought it was more pliable. The experiments would be more interesting with more liquid Goo. Even so, I liked. I leave the link to the product:
http://www.banggood.com/Magnet-Decompression-Toys-Magnet-Magnetic-Putty-Plasticine-p-932366.html