I recently made a container for my angle grinder cutoff wheels ( ), and was intrigued by the design of a container with the thread on a post in the middle. Being wide and flat, these are good small-parts containe, and unlike if the thread was around the edge, the lids are easy to thread ooff without having to align anything. These containe are in all the common sizes for angle grinder discs, but there are also variants with six internal compartments for storing boltscrews or other miscellaneous items. Supports not required, and the thread is chunky enough that it prints fine without needing accurate printing (I was trying a new filament and it drooped all over the show and the lid still went on great!). There are quite a few "body" variatio in terms of depths and internal-partitio, but there is only a single lid for each diameter: ie the 115x40 lid will work for the 115x20 body, the 115x60 body and the 115x60_divide body. This was made in blender. Source files available on github here: The blend file is rigged with some drive, so making a custom diametedepth is just a case of twiddling some numbe in the "Paramete" object