At her 15 month appointment, Papillon's doctor inquired whether Papillon was imitating household chores and such. In the moment I couldn't think of anything - we don't have a play kitchen, or a toy vacuum or any such thing, so I wasn't sure what kinds of things to look for.
True to form, it was just a day or two later, that she did this...
...keys right up to the doorknob, complete with unlocking motion.
So yes, she seems to be properly on track for imitating household stuff.
She has also, since, discovered the joys of stirring a pot full of small toys while I make dinner!