In her toy buying spree Mom bought Alice a coffee maker set, presumably because of her coffee habit. You can see her mixing up a nice cup here (and Charles playing with his new, massive car carrier). Charles and Alice like each other’s toys, which is both endearing and hair loss inducing.
A bit later after this, Charles and Corwin were playing with their toys. Alice picked up one of the coffee cups and wandered about near them, observing their behavior. It was like Mom in miniature.