A cool idea on using the space of the corner cabinet ! With these shelves, you can organize, see what's in it and not have to get down on your hands and knees if there was a lazy Susan in the space. Down side--- no hide and seek space.
Learn how to build an in wall cabinet (wall niche) - another pretty niche w/ crown molding and shelves (remember the earlier pin about hanging towel bars inside the cabinet) great for small bathrooms (and other rooms)
Pull-out Bathroom Storage Behind The Shower Plumbing Wall: Storage and easy access to the plumbing when you need it! This is much better than the narrow/deep closet I have in the bathroom. This way, everything is easy to see and access.