I am looking for a USB-based WiFi adapter which should be extremely compact, that is not much bigger than the USB-C connector it's based on.
It needn't be able to reach more than 2-3 meters with reasonable bandwidth, though.
I've seen fairly compact USB-A WiFi adapters, but so far none with USB-C.
NB: please consider that there have been memory cards with built-in WiFi (e.g. search
Wi-Fi SD card), so the size of the respective chips surely shouldn't pose a problem.