We have a routine now when we come home: Janie uses the car key to lock the doors, then finds to fob on the keyring to unlock the door to the lobby, presses the elevator call button, presses 8 in the elevator, finds the door key and places it in the keyhole, and then presses the doorbell while I use the key to get us in.
The whole time she does this she’ll repeat over and over “KK do it.” She’s definitely entered the independent stage of toddlerhood.