We don't allow users to directly post images to the site but users can upload a QR code to an image host or other website and link to that here, provided that all of the content on the page is appropriate.
We do have a patterns section of the site outside of the forums as well but that currently does not support QR codes. It was created for the original worldwide Gamecube game which didn't support them or even have a camera. Back then people used to recreate them in their game although I believe the newer games use a different color palette so it would be hard to replicate the pattern.
Let's go Gophers! Ski-U-Mah!
Sorry, I don't accept random FCRs.