There's a site, WhiteRabbitExpress that will buy Japanese things for you and ship them. I haven't used them, but would consider it. I've heard about it from fountain pen and stationery buffs on Instagram.
Myself, I love the Hobonichi Weeks, and am wondering about a new canvas case which seems to be available to ship to US.
I also love NockCo and am thinking about their forthcoming A5 case, into which I could thrown a skinny A5 notebook, and iPad mini, the Weeks, and two pens.