This year's Southern Living Idea House in Senoia, Georgia was designed with a craft "closet." It was literally a closet that had been designed as a craft studio and wrapping station, although I think gift wrapping would have been a little difficult without a nice flat surface to spread the paper out on. Not sure the desk would be a practical place to work with wrapping/craft paper hanging down inches above the desk. Umm, this may be an example of how NOT to design your craft room.
If your craft room includes a wrapping station, then dowels should be your best friend. You can purchase them at your local hardware store and have them cut to fit inside shelving units. Dowels will keep your wrapping paper and ribbon neat, orderly and within arm's reach when you're ready to wrap that perfect gift.