Russell Crowe might do something like that. A lot of the time I think he gets a bad rap in the press, but that's the world his in.
One day when I worked on the Ramp he left his diary onboard, it had all his personal info and contacts in it. The Cabin Cleaners found it and handed it in, and didn't expect much more to come of it. Well a couple of weeks later when he was back in town he invited the people that found it out for dinner with him and his wife, Shane Warne and his missus were also there. From what I heard they all had a great night and from then on my opinion of Russell softened.
As someone said earlier, you reap what you sow. So good on the crew for doing a little bit extra.