Hidden dog crate - no DIY instructions as this is for sale but can totally DIY this for less! If I ever got another dog I am so doing this, no crate in house, no dog bed spread over the floor and I'd have space to display :D
"Dog house" is actually hidden access to a doggie door, providing visual & physical security against intruders. Could also protect dog door against weather! Not that we have a doggie door, but good idea!