Mirror in bathroom so can see the back of head. How To Hide Unsightly Wall Panels - tutorial shows how to attach hinges to a picture and wall so switches, access panels, etc. can be hidden, yet still accessible. This is not recommended for thermostats!
Mirror Mirror On the Wall! Stacked horizontal mirrors in an entryway - you can use super cheap mirrors from Walmart. They look glam when stacked like this. I have another pin with three stacked above a modern desk that looks great.