Here's the women's toilet in an airplane:
Transexuals go in it. Bisexual men go in it. Kids go in it. Grandfathers and mothers go in it. See the trick is that "women's" and "men's" restroom distinctions are BS! There's one very important idea behind a toilet door...people take turns going inside. You see, that's why it can be a room for anyone to poop onto...unless you gave cholera.
Wow. Would it be something I could do at home with a blender and a mixer or rolling pin?