RPMTESLA has some nice options for changing the look of the model 3 interior. The owner Mark is a great to work with and stands behind the products. They have installation videos showing how to install their products as well. I would recommend their upgrade trunk lights as well. Big difference in the light output.
https://www.rpmtesla.com/model-3
https://www.rpmtesla.com/installation
https://www.rpmtesla.com/model-3
https://www.rpmtesla.com/installation