Hi there I have designed these DJI Inspire storage inserts for the original roller case.
This design is a perfect fit.
The lid requires (4) 8x3mm round magnets and a tiny bit of glue for each. Same for the main body (4) 8x3mm round magnets.
Get the magnets on Aliexpress:
https://tinyurl.com/3nmm3cjy
I have another version inside 3MF with a divider that clears the lid cutout.
The files in the 3MF are all STEP files so the quality is high and you could modify the insert easily. For example make a custom dimension for the divider/s or create larger or smaller magnets to fit something you already have lying around.
There is also a TPU insert if you wanna be real fancy for the interior base.
PETG Slow Settings, see 3MF Settings for Bambu slicer.