Dummy 13 storage cases don't have room for accessories! This solves that problem. Remix of original case by Lvnatic with added room when different hand variants are used. I also made an additional accessory box and a lid. They are stackable as high as you want in any order. 

ALL 3 MODELS HAVE INTERNAL MAGNETS that must be placed during a pause in the print or else the different parts won't magnetize together. All models have 6x3 magnets that are a single layer deep in the bottom of the part. Pause the print at 3.4mm height (right as the magnet hole gets covered) and insert your two magnets. The action figure box and the accessory box also have magnets that get glued into the top holes after the print is finished. 

I just printed these with .2mm layer height in PETG or PLA. 

For the multi-color lid I just did a filament change right when I inserted the magnets.