Long before there were “fidget spinners”, Pokemon and “Pogs” there was a craze that swept me away when it first hit the market. A Hungarian designer called Erno Rubic devised a cube, subdivided up into 3x3x3 cubies that all slid on each other in layers:

I instantly had to have one (well, in truth I had 9, including a triangular, circular and 4x4x4 one that I still have). Continue reading →