Staircases take up a lot of space, so why not use them for storage as well. Imagine each step is a box with a hidden drawer in it still allowing for additional storage or home office space beneath the staircase.
I love things that hide things. I especially want that bathtub and the vent/safe. The TV hiding all the other electronics is a great idea, but I'd imagine there'd have to be some kind of sensor in order to work the other stuff.
Organize Your Pantry: DIY Lazy Susan Pantry: This would be great for a small kitchen with limited storage space. --- I wonder if we could replace our standard pantry shelves with something like this. This would be better than pull out shelves.