Since my last child was born five years ago something else has bred in my house. Toys. We started off with a few rattles, and as the years progressed the plastic proliferated into an army of Playmobil figures, a soup of Lego, a sea of cutesy Sylvanian rabbits. But four weeks ago I stood back and looked at our toy box in a new light. A penny dropped. Not one plastic figure had a wheelchair, or a hearing aid, a white cane or any kind of disability at all. There are 770,000 children in the UK with disabilities and more than 150 million worldwide. Yet these children arrive into a world where, even before they have left their mother’s lap,…