(note: for some reason, my brain keeps trying to replace the last two words in the subject with “drunken sailor”; can’t imagine why)
Kyokuto makes some very nice notebooks. Sturdy covers in leather or plastic, convenient size, and nicely formatted refill pages. I found them at MaiDo Stationery, but Kinokuniya carries some of them as well. I like the B6 size best for portability; B5 is more of an office/classroom size, and A5 just seems to be both too big and too small. B6 is also the size that Kodansha publishes all their Japanese reference books in, including my kanji dictionary, which is a nice bonus.
[This is, by the way, the Japanese B6 size rather than the rarely-used ISO B-series. When Japan adopted the ISO paper standard, the B-series looked just a wee bit too small, so they redefined it to have 50% larger area than the corresponding A-series size. Wikipedia has the gory details.]
I really like the layout of Kyokuto’s refill paper. So much so, in fact, that I used PDF::API2::Lite to clone it. See? The script is a little rough at the moment, mostly because it also does 5mm grid paper, 20x20 tategaki report paper, and B8/3 flashcards, and I’m currently adding kanji practice grids with the characters printed in gray in my Kyoukasho-tai font. I’ll post it later after it’s cleaned up.
Why, yes, I was stuck in the office today watching a server upgrade run. However did you guess?
On a related note, am I the only person in the world who thinks that it’s silly to spend $25+ on one of those gaudy throwaway “journals” that are pretty much the only thing you can find in book and stationery stores these days? Leather/wood/fancy cover, magnet/strap/sticks to hold it shut, handmade/decorated (possibly even scented) papers, etc, etc. No doubt the folks who buy these things also carry a fountain pen with which to engrave their profound thoughts upon the page.
Or just to help them impress other posers.