GLIFO is a custom-made writing aid, manufactured in 3D printing. It is light, washable and adjustable: a practical grip that caters motor difficulties of children with a complex neurologic disorder, allowing autonomy in writing and drawing. It has been co-designed by makers, designers, kinesiology experts, therapists and the families of the children involved. Created with parametric software through digital fabrication, it is low-cost and accessible and, compared with other handles on the market, it reduce the contraction of the limb, advancing rehabilitation.