Was it once possible to put a 1x1 round into a minifig cup? I remember being able to put a 1x1 round brick into the top of a minifig cup before my dark age (the period of time that a person stops building with Lego, up to the time they pick up the bricks again), but I have tried it since and can't do it.

Was I imagining that connection, or have they redesigned the minifigure cup?

Is/was there another connection that I might have confused with the minifig cup?

(This would have been sometime in the 80's, but the bricks in my collection went back to the '70s.)
Is it possible that you are thinking of this goblet (2343)?



This part was fairly common, and it was introduced around 1985, so it was probably in your collection.

1x1 round plates attach securely to the top as shown in this lamp from the Pet Shop: