Some time ago I came across an interesting symbol for the ladies or men's lounge (aka restrooms aka WC aka bathrooms) - I can't recall what it was exactly. This is a continuous project also. Various symbols for the same idea for relief.
My immediate thought was... hm, why do the ladies need more signs? I think the ladies would agree with me here. In reality, the original sign for men's fell off and Javier decided that since he picked up a set of stickers - y not use them both (I suppose).