This is by far the biggest project I've completed. It took something like three months from start to finish. It's super comfy, though. That's my iPod in the upper right-hand corner as a size reference.
I don't have all of the charts saved, unfortunately, but they should be pretty easy to reproduce. I use a web program to generate charts from images. This is the program I used: [link] The images I used are the official Ken Sugimori ones.