This ain't tripping managers. It is tipping maintenance people and the door man (if the building has one). I grew up in NYC in the 70s/80s. This was absolutely standard. My mom would also have my sister and I draw cards to put in the tip envelope. The maintenance men do so much in those older NYC apartments. I get that people should earn a living wage, but this was always seen as a way that the tenants have them a personal thank you. Also, I grew up semi-rich. My parents earned way more than a door man. It was seen as the right thing to do. I still give a holiday gift to people who do work for me. For example, I gave the guy who does my bi-weekly yard work $200 last week.