After having a stroke, people’s neural pathways are damaged and physical therapy is required. Amelia Day, a middle school American girl, created the “Pressure Soccer Ball”: a rehabilitation pressure sensing ball that helps people recover from a stroke using light and sound stimuli. The ball gives the user sensory feedback on kicking accuracy to help them regain mobility and strength.
See the young 14-year-old aspiring inventor herself explain her invention here:
How can you also modify existing products to serve a different community?