Here's a why-didn't-I-think-of-that? design, the Corner picture frames.
They're designed for accessorizing the inside or outside corners of a wall and come in beech black or natural maple.
At $400 bucks a frame, I REALLY wish I would have thought of that before the product designer, Yvonne Schroeder did. They are about 13 inches high so don't worry about them getting lost if used in an interior corner.
Implications - Urban areas are constantly becoming more populated resulting in tighter living spaces. Cramped consumers yearn for furniture and products that are fully functional, yet are very compact and storable. Companies can cater to urban demographics by designing products for compact living spaces.