Khay đựng củ sạc chuẩn US (NEMA Type A/B) hệ Gridfinity

I have an unreasonable number of USB bricks and a few adapters and other things that also have a US plug (either a Type A or a Type B) all of similar size that require storage. Because I am obsessed with Gridfinity, I decided to design these adapters to store my bricks. There are grounded (type B) and ungrounded (type A) versions. The ungrounded ones are 7mm shorter than the grounded ones because the lack of grounding pin allows for less height.

I've printed a bunch of these in PLA with the default settings on my Prusa Core One to great success without any supports.