The New Nintendo 3DS Luigi Moustache Cover Plates are really quite useful.
A few years ago I was sipping tea in a London cafe and playing Animal Crossing: New Leaf on my 3DS. Looking across the room, I spotted a chap I used to work with. We always got on well, but I was in no mood for small talk and chit chat. I had flowers to plant and fish to catch.
As he approached, I saw a glimmer of recognition in his eyes. I quickly lifted the 3DS to obscure my face, and in doing so, the Luigi cover plate gave me the appearance of having a moustache worthy of an Italian plumber. I was completely unrecognisable.
He passed by without saying a word, and I was free to continue my game. I had gotten away with it, but for some reason, he de-friended me on Facebook the very next day. You win some, and you lose some.
Platform: New Nintendo 3DS