Clear mirrors
Have you ever had to take a shower during the winter and close all the windows in your bathroom, then steam gets everywhere? Now you can’t open up the window because you will freeze, so you just have to wait and rub the steam off the mirror so you can look at yourself.
Well, the Japanese do not have that problem, and guess what, they thought of a way to fix it like everything else. Most mirrors have a little heater in the center that makes it heat up and dissolve the steam after a shower. No more desperately rubbing the mirror until you get a clear reflection.