Every year at the end of November I send a package addressed to My Excellent USPS Crew at [local post office name]. It's got individually wrapped candy in it, as it does most years though I sometimes switch up suppliers, and the candy is vegan because that's often a better fit for a lot of dietary preferences/requirements.

They always send me a sweet thank you note.

I love my USPS crew. They make my business possible. It is not an exaggeration to say that they make my life itself possible.

I should probably send them thank you gifts more often, really.