DIY Repourposed door for corner shelving
20 DIY Corner Shelves to Beautify Your Awkward Corner
DIY Corner Cabinet - My Practically Free Dining Room Cabinet - The Golden Sycamore
Easy corner desk out of pallet wood. Also would be a great corner bench seat for a small space.
Two Story Living Room with La-Z-Boy Aspen Corner Sectional - couch
You could build a spinning round clothes rod in the middle for maximum use of space