I’ve reported previously (see here) on Israeli NGO ALYN. At Alyn hospital’s annual make-a-thon, 120 participants created prototypes of products to help children with disabilities. They included a musical organ for a paralyzed boy and a wheelchair controlled by a switch and a joystick.

https://www.timesofisrael.com/tech-teams-at-alyn-hospital-hack-big-health-ideas-for-small-patients/