By Tobias Carroll Sometimes, unexpectedly valuable things show up in the places you’d least predict. There was the case of a David Bowie painting found in an Ontario thrift shop last year, for instance, or the vast trove of abstract art that turned up in a dumpster — and might be worth millions. It’s one thing to find something valuable for sale for a remarkably low amount; it’s something else to just find…money. But that’s what happened to one California resident, according to a recent article at The Guardian. As the article details, Vicky Umodu was moving into a new house in San Bernardino a…