So I’ve been messing with QR codes at work a ton in the last week, and my brain finally collided 2 important bits of information. 1) QR codes can link to any URI, and 2) you can use a URI to launch a Sweeter Home theme.
Try scanning this:

If you want to create your own codes to share, just change USERNAME and THEMENAME in the below URL and paste it into your browser address bar (the link will be case sensitive).
http://chart.apis.google.com/chart?cht=qr&chs=230x230&chl=sweeterhome://ws.sweeterhome.com/themes/content/USERNAME/THEMENAME









