In Franz Kafka's The Metamorphosis, Gregor Samsa wakes up one morning to find himself transformed into a giant insect. As he struggles to adapt to his new form, Gregor's relationship with his family changes. He becomes more distant from them and starts to see his furniture in a new light.
Gregor's furniture symbolizes his isolation from the rest of humanity. As he spends more time in his room, he comes to see it as his own personal kingdom. The objects in it become like loyal subjects that he can control. This is in contrast to the outside world, which is full of people who are repulsed by him and want nothing to do with him.
The isolation that Gregor feels is also reflected in the way that his family treats him. They start to see him as more of a nuisance than a son or brother. They are constantly telling him to go back into his room and stay out of sight. This only increases Gregor's feeling of being alone in the world.