Food warming bags
This past weekend I accepted a Wingstop order, it was like $13 for 3 miles so obviously I jumped all over it.
When I got their order it was in two bags, since I always bring in one food warming bag I put one bag in that and carried the other out to the car where I put the other one in my second warming bag and then drove the 3 miles to drop off.
The instructions said meet at the door and the lady was outside when I pulled up. I carried the bags up to her and she commented about how no other driver puts her food into warming bags. I said it's how I would want my food handled, I want warm food not cold food and that I'm just treating all customers orders how I would want mind handled.
We talked for about a minute longer and then I went on about my way. Not even to the end of the street and I get a notification that she added $8 more to the tip! This turned into almost $20 in tips alone for a 3 mile drive.