Are there any “mundane” practices associated with Hestia? I would counter with the question of whether there are any household practices NOT associated with Hestia.
As keeper of the home’s hearth, cooking (especially baking) is intimately associated with her. Also, she would be the goddess most closely linked, in my mind at least, with maintaining the cleanliness of the home. This is part of the way that she manages to do her part of being at the center of the Cosmos and our lives.
It is said that “Home is where the Heart is”. It is also where Hestia is.