Maybe you’ve been in a cafeteria and seen those spring-loaded plate dispensers. It’s a big stack of plates in a tube with a spring. As plates are removed, the lower ones are pushed up into sight. Pez dispensers and most gun magazines operate with a similar principle.
Sometimes someone comes along and dumps a new bunch of plates on top of whatever is in the stack at the time. One thing about a stack like this: if you do keep putting new on top of old, the old is never used. In some cafeterias, there might be a plate on the bottom of some stack that’s been there since the place opened in 1958!
One formal term for such a dispenser is a Push Down Stack.