We tip and leave little gifts randomly, not just at Christmas. That poor rural carrier lady works her ass off and then goes out on Sunday delivering crap for Amazon. The trash truck guys are out there in 100 degree hot sun scrambling to keep up. My son worked a trash truck for awhile. He said nobody ever tipped or gifted at all, they just bitched. This was in a locale that had steep icy roads and they spent a good part of each day chaining and unchaining, never able to keep up with boss man's ridiculous expectations.