A commenter named Sara reminded me to check out what might be new at Nanami Paper. If you like the Tomoe River paper found in certain Japanese notebooks, such as those made by Design.Y, Nanami Paper offers its own brand of notebooks called Seven Seas, which feature this lovely paper in a softcover lay-flat binding. They have also expanded their offerings to other Japanese notebooks, as well as pens and accessories.
The other nice thing about Nanami Paper’s website is the thorough information they provide. I loved this comparison chart analyzing the value of popular notebook brands by how many square inches of writing space you get per dollar. It’s quite illuminating!