For kids with dysgraphia, may I suggest the use of a gel pen? They seem to offer less friction than a pencil. My son and many of the students I tutor all seem to really enjoy writing with a gel pen. It's hard to find, but there;s even an erasable one (Pilot Frixion) which seems to oversome many teachers' resistance to the use of a pen in early grades.

http://www.amazon.com/Pilot-FriXion-Point-Erasable-FX7-BLK/dp/B001GAOTLY