The ventilation box, which I have developed as an USB NVME SSD disks holder. On the front and back parts there are 120mm fans mounted which make a ventilated zone inside this chamber/box. The ssds are mounted on the mini shelves. It is a little bit challengint to close the box with shelves without them moving, however it's still doable and considering it is aimed to be done once/a couple of times - no big deal. Apart from that - standard polishing of the joints is required.
I was using Anycubic i3 MEGA X for printing, and the gcode files are included. First part took me about 8 hrs to print, second - about 16 and a half.

The teeny-tiny screws I have used for connecting the chamber walls are from this set (with the diameter 1mm): https://www.aliexpress.com/item/1005004441812196.html