Tanya beat me to it! I was going to post the same thing…just saw it last week I believe.
I like the idea of re-using big-box stores. Las Vegas is now filled with empty stores, industrial/warehouse space, and offices. Partition them off, swap meet style (back east they call them flea markets) and give them a solid door they can lock, maybe a ceiling with insulation so they can get some quiet and privacy. These people don’t want to be shipped off someplace where there are no panhandling opportunities or maybe even real possibilities of working.