Share a coffe
I went to buy a cup of coffe, and while ordering, it turned out I had a second coffee for free. But I had to order it by noon the next day.
Too complicated, as I had no plans to run to the coffee shop on Sunday morning, and did not want to have double coffee right then.
So I just turned round to the girl behind me and asked if she would like a coffee just like mine.
She half believing just said yes. Then she was surprised and so very happy for the unexpected free coffee.
Her happiness was great, the coffee was Ok, and I learned that something as simple as sharing a 2x1 promotion can work wonders towards raising your spirits.