In every household of a physically disabled person who lives an independent life one finds cord, string, wooden sticks, Velcro tape, rubber and plastic tubing, pieces of carpeting and plastics shaped or fashioned to do a specific job. These “tools” make it possible for disabled people to use standard products and with little expense make these products work for them. These humble tools are the interface between user and other equipment—extending one’s reach, the ability to pull, push, or turn, in effect to manipulate the world about one according to one’s abilities.
