For my next project, my idea is to create a plug adapter from a Brazilian to an American format to be used by my laptop. I have been using two adapters ever since I moved to the US and I haven't found the particular formats I need if not on those complex all-in-one versions that are generally considered too big and low quality products.
My idea is to also explore the shape of the adapter to bring originality or a sense of customization to it.
The link below is a video that showed me in detail how a plug adapter is on the inside. Even though the video displays a plug from the UK, I believe that the principles behind it are the same to other output formats. The vlogger on the video also talks about ideal materials for the parts and it seems reliable in terms of quality.