First Apartment: Build a naked closet on a bare wall of your bedroom. Hang a curtain rod from the celing and attach a snazzy curtain to pull to cover and viola! new, bigger, and tailored closet to your needs.Great idea for a place with no closets.
A laundry room next to the master bedroom. The hamper goes into the master closet, and pulls out into the laundry room. Separate shelves for folded clean laundry. This would also work really well in a hall closet opening up to the laundry room.
DIY: PVC Pipe Shoe Storage - so fun and so simple, could easily spray paint or cover in fabric or paper too. maybe a horizontal layout of two rows or something. I think this would be good for garage "yard shoes" storage