I think you will find Lily Nielsen's ideas on working with blind chidlren very helpful.

If you google "lilyworks" you will find more information on the active learning approach she has developed. She creates stable and accessibel environemtns that make it possible for a child to interact with the environment in a meaningful way - and once the child gets the idea that they can actually influence what happens around them they motivate themselves.

Her ideas fit in very well with task based physiotherapy approaches to intervention. I think it is important to understand that no amount of passive sensory stimulation will get a child to actively exert itself - only intention and the desire to achieve something does that. So active learning is the only way to go.

Pam