A simple stackable box for holding deck boxes. There are dimples and bumps on the boxes, so they are stackable. You can remove them and take them with you when not being stored.  There is also a hole in the back of the holder to assist with removing boxes.

UPDATE: Added base plates if you want to lock stacks together. 

LOOKS SO COOL

Print Settings:
I would suggest printing with a brim. 
.28 Draft worked well for me
15% infill

This is V1 and we will continue to improve!