Just a gift
The U.S. Postal Service forbids carriers from accepting cash gifts. A gift card or a basket of fruit, nuts or chocolates that could serve as an off-duty snack is acceptable. But gifts must be under $20 in value.
You could also throw in a glowing letter to a supervisor praising a carrier who was undeterred by snow, rain, heat or gloom of night. Such praise may mean even more than a gift, says Peggy Post, author of "Excuse Me, But I Was Next."
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