I find the suggestion that people keep a smaller "fake" stash of money in a more obvious place interesting. It would be nice if this could be formalized—have banks offer a service where they sell packets of marked, sequential and perhaps even non-legal-tender bills that you can put in these obvious places. (Of course, the fact that they should be hard for a burglar to recognize at first glance means that they might be used as counterfeits—so an equivalent sum of real money should be kept at the bank as a "deposit" (not in the banking sense of the word) to ensure good will.)