I have quite a few extremely small parts on hand, such as M1.6 nuts and washers, all of which are packed in tiny plastic bags, making them extremely difficult to find. So I decided to design and make this solution myself.
These cases feature a snap-fit assembly design, allowing me to add or remove drawers as needed. I've already printed four complete drawers and am currently working on printing a second set.
I spent a lot of time repeatedly debugging to make all the parts fit together perfectly and slot in smoothly.

The shell is printed using red 3mm PLA, and the drawers are printed using white 3mm PLA. Throughout the entire process, there is almost no need for any post-processing or cleaning work.