I have a headcanon Jacqueline and Robert are bad at keeping house. I mean, Jack forgets to eat and rest, and Robert can’t normal human, full stop. Except he can cook and will sanitize a house if his patient’s health is at stake. Which is not the same thing as keeping house, mind you.
They would try to get better at it with the latest and greatest technology, using stuff like this:
But Robert would accidentally set them on fire because, again, he can’t be a normal wizard, let alone a normal human. Whereas Jacqueline, she keeps pulling them apart and cannibalizing the components for some other project.
I fancy the family eventually intervenes with a magical solution. That is, they emotionally blackmail Harry into making one. (“Harry, hop on it!”)