A QR code is super useful for a home network if you want to use and share complicated passwords. The idea came about when I found https://sleeplessbeastie.eu/2022/06/15/how-to-generate-qr-code-to-access-the-wi-fi-network/. But many WiFi routers allow for multiple networks, pointing toward the need for multiple QR codes. To differentiate these QR codes, add a center graphic for each network. Included here are graphics for 2.4GHz and a 5GHz networks. The code for adding the graphic is based on: https://www.geeksforgeeks.org/how-to-generate-qr-codes-with-a-custom-logo-using-python/. An alternative base would be to use https://github.com/divan/qrlogo which is perhaps conceptually simpler since one would just need "logo" files.
The current code is not especially user friendly and requires manually adding SSIDs and passwords to wifi-qrcode.py.