Two years ago, I got rid of my gigantic teacher desk.  My "desk" is now a kidney table, which I also use to meet with students in small groups.  I use cube shelves next to the kidney table to store things.  This allows me to have room for more child-centered areas in my classroom.  I had a 14-inch space in my classroom and decided to put a narrow bookshelf there to hold more items.  This 12-inch shelf fit perfectly, with a couple of inches to spare.  It was very easy to assemble, and I love the blue accents, which go well with my blue and green color theme (calming colors . . . I need those with 1st graders!)