Interesting post by Andy Sowards featuring 40 artistic and creative QR Codes, see them all here: http://www.andysowards.com/blog/2012/40-epic-qr-code-art/

Shadow QR Code – see my post with video.

QR Code cross stitch – my post

Post-it® Notes QR Code – see my post.  Like to make your own see my post on  Post’it Art Creator to design one!

Source: www.andysowards.com