None of those are options for this thing. They are all real DIY projects that some people have made. Some of these especially 3d printed ones have 3d models made by authors of each project. Still takes time to make clean and consistent illustrations out of them, probably less bad once you do it hundred times in a row and have a good workwflow. But for others especially ones made of cloth there is no choice other than drawing them by hand. I guess you could speedup the process by tracing over a photo. As for stolen without credit aspect, at the bottom of each page there is a projects name, author and website where it was posted, it also functions as link. One thing that could be better is making links accessible in printed version either as text or QR code of them, currently you can only access them only in digital version.