Inventors dance and spar with ingenuity and nowhere more so perhaps than in the world of toys. The fertile and inquisitive mind of a child provides a playing field for those who, while not children, can still see that which inspires and intrigues and piques the interest of the young. It is indeed an art form and sometimes there comes along a new idea that potentially joins the gallery with Lego, Barbie, Meccano, Play-Doh and the hula-hoop. An ingenious toy that I believe will be in that line-up one day is YAMS, a creative building system, comprising colourful pieces of...