Rags to Revenue: What local jobs and start-ups could we create from textiles now going to waste? An introduction to the Challenge to learn Last September, the City of San Francisco is inviting its citizens to participate in the “Rags to Revenue” Challenge to address the issues of waste and job creation. The ImproveSF Design Jam will kick-off the challenge with a two-part event where folks from the design, start-up, and social enterprise space come together to collaborate on innovative ideas to answer the challenge question from experts working on issues related to job creation in San Francisco.