I found these to basic chairs and have sketched them and intend to tweak the design when developing them

Ideas for two armchairs.

The first one is of a Victorian nursing chair. I got the idea once reading the text that perhaps the chair belonged to her mother and was passed down in the family. The mother then used it to nurse her two children. The upholstery is embroidered and could have been sewn by the mother herself. To have an embroidered cushion in both chairs would be a nice touch.

“How long you have been sewing again today!” - Mr Samsa

The fathers chair I thought would be a rocking chair as he sleeps in it sometimes. It is comfortable but the rigid look to it makes it feel hard and that any sleep would be disturb as in the the his wife and daughter persuade him to his bed where its more comfortable.

Here are a couple of drawings i did from inspiration

from the text

The couch with a blanket over it which Gregor drags over himself and a table in the living room with some breakfast items on it.