For many people who are homeless or members of underserved populations, cell phones are a lifeline; a phone may be their only way to keep in touch with distant friends and relatives, schedule medical appointments and job interviews, and deal with emergencies. Prof. Giri Venkataraman and PhD student Maitreyee Sanjiv Marathe took on the challenge, even organizing a hackathon at the UW-Madison makerspace they dubbed the Solympics, to generate ideas for a solar-powered public charging station. The winning concept was the e-Little Free Library.