Walnut embroidery floss thread organiser / storage with compartments for all 447 DMC floss colours. Art supply houses sell drawers like these for oil paints or pastel crayons. Very shallow, perfect for thread.
Once you start embroidering, your floss stash will multiply faster than gremlins in water. Here's how to keep it in control. (I think this is even better than the floss bobbins! And I love plastic baggies!