What kind of homes do otters live in?

what kind of house do otters and do you know where I can find a picture of it and if it were a "talking" otter what sorts of house wares would it have I need these ideas cause I'm making a mini otter house for a project at school cause my cl is reading the "Narnia" books and we had to think of an Animal that we like and make a little house for it and fill it with stuff that a talking animal might use.