A friend of mine got onto a budget-priced flight somewhere in the continental US. As they pushed back, the Purser began her announcements:-
"Ladies and gentlemen, we've found a wallet...(sudden hush in the cabin)...now that we have your full attention (and made the usual safety announcments, then:-)...now, who would like some peanuts?"
Several pax hands shot upwards, whereupon the FAs at the front and rear of the cabin just pelted small packets of peanuts at people all over the cabin! This got gales of laughter and the flight then proceeded with everybody in something approaching a merry mood.