What would you do if you $100 bill at work? Turn it in or keep it? I...

I've seen and heard of two situations for money to be laying around. The first is as bait for potentially dishonest employees. An example I was told of is coin channels in vending machines being plugged up to try to catch servicing personnel stealing. The second situation is one I see all the time. I often work in customers homes while they're off to work or running errands. It's not unusual for me to see cash laying on a countertop on the first day a job. I've never discussed it with customers, but I'm sure it's a test of my honesty.