Happen to have a lot of XD Filament spools lying around, and unlike other spools I've seen, these only have outer holes located a 180-degree points from one another. I found not many models online are designed for this arrangement, so I decided to make it myself. I also decided to add holes inside the drawer so that magnets can be used to keep the two halves connected. 

Also, unlike the photos I included, the model has been updated to include a semi-circle hole so that it's easier to open the drawers.