Coincidentally I installed some security cameras today that came with such a thing. It was a small removable sticker with a triangular hole pattern and it was very helpful. The adhesive was like a post-it note in that you can relocate it, which I had to do since my original install location turned out to be solid stone. But mass producing something like that is easy. Making something much longer and custom-sized to the job was my challenge, while keeping the cost down. I think this Brother label maker would work... one issue I had with the test was that the beginning of the label was a bit out of alignment and it corrected itself after a few inches. The QL1100 is made for even wider rolls, so hopefully that doesn't make the problem even worse. I may need to set aside a few inches of scrap leader.