Here’s some attractive notebooks, printed on recycled paper with soy inks: Workbook Duos, by EcoJot.
They look like they are packaged similarly to Moleskine cahiers, but this is another one of those frustratingly uninformative websites: what is the size of these notebooks? It doesn’t seem to say anywhere, and you have to dig into each individual design to find out that the paper is lined, and that there are 64 pages. Still, I really like the designs.
The size of those notebooks is approximately 160 mm wide X 230 mm high (6 X 9). I quite like the paper (and write exclusively with fountain pens, although not extremely wet-nibbed ones.