Avoid the morning tango around the single sink in your master bathroom and install his and hers sinks. This allows everyone to have their own space for their own stuff and will eliminate the fights over cleaning up her make-up or cleaning up his beard trimmings. This way both of you can have all your necessities out where you need them and not have to worry about keeping it a certain way for someone else. His and her towel racks can also be a good way to keep your things separated.