Gridfinity storage for small parts

This is a gridfinity model for organizing tiny parts. I needed storage for M2 and M3 spacers for electronics and using a full 1x1 for each part type was wasteful. Most existing ways of creating smaller spaces had hard-to-reach compartments. This solution has 20x20x20 spaces that are shaped like craters, making it easy to grab tiny items. There are 4 spaces in each 1x1 gridfinity cell.