I don’t really know what this is. But I want one. Especially this all black one! It’s apparently called a “ball of whacks…”“The Ball of Whacks consists of 30 magnetic design blocks that can be rearranged into many, many shapes — including the beautiful 30-sided rhombic triacontahedron. More versatile than a puzzle and lots more fun than a brain teaser.”
It comes in other colors too. More info here.