I just saw this thread, and thought it would be helpful to add the accomodations that my DS8 had in grade 2 for his hypotonia and fine motor skill problems. We haven't moved to keyboarding yet, but might do this next year when he needs to write more. This year we had the following accomodations:

-special cushion on his chair - wedge-shaped and textured to help with posture and sitting still

-a slanted surface to write on (like a 2 inch binder), sometimes with the paper taped to the surface so it doesn't move around. The slanted surface helps with posture and gives a place to rest his arm

-graph paper(with big squares) for math to help line up numbers

-larger spaced paper for handwriting, with the area where the letters should go highlighted (done by hand in advance by teacher or parents)

-a 0.9mm mechanical pencil (teaches appropriate pressure to apply when writing)