I wanted to have spools ready to go for my Python AMS, but didn't want to just lay them down on their side. This is a quick design to hold filament spools already fitted with the Python AMS adapters.  

Print with PLA, 3 perimeters and no supports. 

Note: This was modeled pretty quickly in Fusion and tweaked a bit during testing. Once I have a chance to clean up the model, I'll post the .step file if anyone wants to modify it further.