I'm working on a third quilt for my 16 year old DS. The first 2 were made with his high school colors and mascot. This one he designed, it is blackboards with complex math equations, then the border will have pi appliqued around it. I figured it would go about 70 places. Find out what he would like most. I love the idea of making the QR code quilt. There are lots of places on the internet to create your QR code.