I have a standing plastic drawer unit with the shallow drawers that I have my regular spools in by color families. I have one of the larger plastic 3 drawer units under my longarm machine with that thread in those drawers, needles and other accessories in the top drawer. the top of the unit holds pins, bobbins and easy to get to items at hand.
One other note that may be helpful to someone is that we have started using SoFine and love it but the colors are so close that we wrote the color # on our bobbin to avoid confusion.