This vertical sleeping device attaches to subway grates to allow you to sleep standing up. Crave says the device created by the Office for the Development of Substitute Materials also comes with noise-canceling headphones and opaque sunglasses. The concept sleeping device folds up into a handy carrying case when you aren't using it. The odd contraption might give you the opportunity to sleep load during the day but you better make sure it doesn't look like you are sleeping or you might wake up without your wallet.
