We converted a small 10x10 foot room plus closet to become my office/sewing/crafting room. The previous owners of our home had used it for a nursery. It is off our back hallway and adjacent to our kitchen and dining rooms.
I wanted a room that matched the rest of our home's decor and was high functioning. I do all kinds of arts and crafts - photography, sewing, quilting, drawing, painting, and more. I also needed lots of storage for my craft supplies, as I do tend to get an idea and want to start on it immediately - many times in the late night or early morning hours. I like to have supplies at hand when I need them.
We pulled up the wall to wall carpeting and had a ceramic tile floor put in. Then came the painting, wall paper, hanging 27 antique botanical flower prints, and the furniture. We added a floral wool rug to warm up the room.
My files came from the Container Store http://www.containerstore.com/shop/storage/drawers?productId=10009264&green=DBB07DB2-05A3-50F9-0E7B-989E1EBA8EC8, the counter high desk from Pottery Barn http://www.potterybarn.com/products/bedford-project-table-set/ , my work table/desk was an unfinished table that I painted black to match the rest of the furniture.
Then came the closet built-ins.....
The closet also contains binders that store inspirational clippings I have collected over the years. I bought presentation binders from Staples and inserted scrapbook paper and labels to coordinate them with the room's decor.
http://www.potterybarn.com/products/floor-standing-photo-carousel/ . The corner also holds a large basket to hold wrapping paper, fabric rolls, and mailing tubes containing freezer paper and Heat'n Bond.
http://lauri-nananews.blogspot.com/2012/08/july-30-mess-in-my-sewing-room-another.html to see it in a mess!