"The right to play is enshrined in Article 31 of the UN Convention on the Rights of the Child, ratified by the UK government in 1991, and most around the world (not the USA though). The government has a duty under this convention to protect and promote play opportunities for all children and young people."
See also: International Play Association; Children's Right To Play; Play England.
N-Control's 'The Avenger' is a case that fits over any standard Xbox 360 joypad to bring controls into easier access. There's a great story at CBS Miami on the origins of this device and it enabling a young man who was unable to use a standard Xbox controller.
Link with thanks to Sheri Rubin. Added to the OneSwitch Accessible Gaming Shop.