I made a small series of one of a kind, letterpress printed "field books" this month. I've wanted to do this for a long time, ever since I bought an old copper printing block of graph paper. 
This allowed me to print my own graph paper in whatever color I choose.
I made softcover and hardcover versions. The softcover has a pocket in the back for storing notes, feathers, postcards, and whatever else you might find while out in the field.
Many pages also have random ornaments like the one below, also letterpress printed. 
If you're interested in purchasing one, I have a couple of the hardcovers left. They are 60.00 a piece. Contact me and I can send you images. I'll be making two, one softcover and hardcover, with pink graph paper soon too.