Nine Notebooks!
The Sega Shop has a selection of 9 different spiral notebooks for 2017 & 2018. Each has a hard card back & front cover with metal double spiral black wire binding. They're all colorful & have fairly different designs.

The first is called "Emerald Club" & it has light blue on blue art. There's (of course) the master Emerald, but you can also spot Knuckles there. The arch has Emerald Club on it, but there's a Japanese word below that you can't read.
Gold Art: This has gold-tone ink for checkers, running Sonic in a circle & some Japanese text you can't read.
Tails Outline: This has a cute colorful forward-facing Tails face & the background is all different line art black/white Tails stock art.
Tails 25th Anniversarry: It's the 25th logo on a black backgound but with just Tails in the wing ring.
Sonic Classic: A Green Hill pixel theme one with Sonic in the wing ring drawn in the center.
Tails Black Star: Neoclassic waving Tails is popping out of a star ring while orange stars dot the background.
Sonic Mania 'characters': It's basically just the Mania 'box' (it wasn't physical) art with the logo on black.
Rings Diamond: This one should have been called 'Sonic 1 special stage' because that's what it's made from: blocks, dots, sparkles & rings all pixelated from that stage.
The last book is the same as the Mania one, only the color is a middling blue. They're all decent designs, that don't look like stuff that's come before.

It would be nice to know what the Japanese text says, but the Segashop doesn't even tell you on its page.