I remember the Automat which was made popular in the US by Horn & Hardart. The first one was opened in 1902 in Philadelphia. You put money in a slot in front of a piece of food, then opened the door and took out the food. The Automats are gone but the silverware is available as antiques.
A film on the Automat was recently released. It will be on DVD on 9/20/22.
update 10/10/22: I just watched the film and really enjoyed it. It brought back memories of my childhood in Manhattan.
Sad! 