Here is a device that may be useful for Occupational therapists. Here is a simple fully 3d printed adaptor for a pen. for anyone that has a difficulty griping a pen. the angle of the grip is changed to be more like holding a frying pan then a pen. An option for someone who may not be able to bend their wrist.
I show the adapter here with it cruving down. but it can just as easily be flipped over and the pen mounted with the adpter curving up. so the hand is much closer to the paper.
see it in action.
Direct link to the stl file.
writer handle file