For the horseman on a budget, this run-in-shed-turned-stall is an excellent option. An attached tack/feed room keeps everything close at hand in an area that needn't be more than about 16x12' for one horse.
We used to use this one for displaying western reins at the tack store, too. Works like a charm! Apply vet wrap to blanket racks to prevent the blankets from slipping off the bars From HorseNation - 10 Barn LifeHacks You Need Right Now