I like this QR code hat by Ravelry user LadyKatka because even though the QR code didn’t work, it still makes a pretty interesting Fair Isle pattern.

QR code doesn’t work but if it did it would lead you to the Vanity Cards for the Big Bang Theory written by Chuck Lorre.

[via geek knits]

More:

• MAKE | The QR Code Quilt
• MAKE | Woven QR Code
• MAKE | Edible QR codes
• MAKE | CRAFT Video: Machine-Knitted QR Code Scarf
• MAKE | QR Code Ring