How to make customized products for 250 million disabled

Shani Sigman, aged six, wanted to paint like all the other children, but her ability to move her hands is limited because of cerebral palsy. Recently, a device specially developed for her has allowed Shani to raise her hands to the height of the page, enabling her to paint with minimal movement. This product was developed at a hackathon run by TOM (Tikkun Olam Makers), which was founded in Israel and has since gone global. And, like all products developed at the association's events, it was developed by volunteers. Whoever helps one person is as though they had helped the entire world, to paraphrase the rabbis, but does help like this scale?

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