Thought i'd share incase this helps anyone. My son is a terrible writer in general and struggles with pen control. We got an old spirograph from the charity shop yesterday and he is glued to it. But when using it, i've discovered, you need to put pressure on the pen in lots of different directions and it requires alot of control and quite a bit of skill. He is aleady mastering it and i'm really hoping this transfers to handwriting control skills. It may be something to look upon ebay. Hope this helps.