My box is up pretty high in the mail sorter this year. I like to check it as I pass by the workroom but I couldn’t tell if there was a page or two in it without walking right up to and even putting my hand inside the shelves. I ran across a little convex mirror in a box of junk recently so I stuck it on the back wall of my box. Additionally I stretched a smiley guy image and stuck to the shelf itself. Now I can pass by the window in the door to the workroom and tell if I have mail without even stepping inside. I don’t need to go in if I can still see the grin.