This is not technically a "nice" thing to do, because everyone has to leave a parking space at some point. However, when my sister and I arrived at our local mall at 4:00a.m. we got a parking spot 3 cars from the door (someone had already left---hands full of packages!) and we were happy!! When we left at 11:00a.m., the mall parking lot was insane. When we backed our car out, I looked at the car behind us and it was a teenage boy driving, and a grandma in the passenger seat with some other people in the back. The boy was fist pumping and the grandma was jumping out of her seat doing happy clapps!! They were ecstatic! We started honking our horn and yelled and waved to celebrate them getting our awesome parking spot. It made our day!!!!!!!