Spaceship Interiors

Currently, for my book, I am working on the interior design of my main protag's spaceship. I've been having a lot of fun with it lately, so I was curious: What are your spaceship interiors like? What kind of stuff is in there? Decorations? Rooms? What inspired it?

well, I personally think it should be standard to have an airtight emergency chamber in the middle of every ship of decent size, in case there's a leak or something.