As simple as a “Thank you” sounds. Don't ever think that it's not a big deal. It is a way of appreciating effort. If somebody holds the door open for you, like the doorman who works at your building or the people who keep your surroundings clean,. Buy them flowers. Let them know that you appreciate their work. You don't have to stress about it. Just order online and let us deliver the flowers to your doorstep. So, what are you waiting for? Make people feel appreciated today!