The PiSquare is an accessory for the Raspberry Pi that allows you to connect HATs wirelessly. Not only is it possible to use a HAT without a physical connection, you can also pair multiple PiSquare units to your Raspberry Pi simultaneously over Wi-Fi.
https://www.notebookcheck.net/PiSquare-Affordable-accessory-for-Raspberry-Pi-HATs-launches-for-under-pound10.612696.0.html
Nobody has tough about an eGPU for raspberry pi?
It's igpu is old and is beaten by others sbc, why not an accessory with eGPU with Mali G78?
According to necessity of individual can choose between G78MP10 or MP24 💪🏻.