BURBANK: "Set decorator for 20 years. Single mom of 15-year-old twins," said the sign above a table of cupcakes, cookies and other baked goods for sale. "Struggling to pay bills, especially my mortgage." A prop master nearby was selling handmade quilts, normally a side gig, to help make ends meet. "I now work two part-time jobs just to barely pay rent and utilities," her sign read. The signs dotting a parking lot flea market described the hardships of crew members who have been out of work for months,...