this is actually a cool idea, hide you doggy dog with a dog house. I've always thought about people climbing through a dog door to invade a house. I've climbed through dog doors after locking myself out of a place.
Nightstand Dog Bed – An old flea-market dresser into a combination bedside table and pet bed. DIY Network has more unique ideas and instructions on how to make dog and cat beds from old end tables, dressers and more.
Built-in dog crates. I love this idea for a dog room! The space above and around the crates is utilized instead of being wasted. It is also more attractive than stacked crates. Even though I don't have a dog I love this idea!