Remix of great design for Dry Box 4L by Dynarun - https://makerworld.com/en/models/39426#profileId-38635

I wanted to have bit more silica inside the box as it was drying bit slow for me.

I have added second compartment for silica and changed covers to allow for more air circulation.
Covers are done by using modifiers and infill pattern which can be changed if you want different or bigger/smaller holes.

There is no mount for Hydrometer, but there is great design for top cover by Leinich - https://makerworld.com/en/models/165093#profileId-181392

BTW. You can print bearning (if you do not have metal one) they do work great - https://makerworld.com/en/models/34145?from=search#profileId-32671