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by m-p-3 2129 days ago
I did my own cheaply-made "WiFi Block" for my guest network with an old CD jewel case, a printed piece of paper with a WiFi symbol, the SSID name and a QR code specially formatted to create a connection, as well as a small NFC sticker under that piece of paper programmed with the same information.

So far it works well, and makes a nice conversation piece with new guests :)