September Stationery Favorites 2026: Notebooks, Pen Cases, Inks, and More Worth a Look

Introduction

September was a big month for stationery. Fresh Midori Yuru Log items, redesigned Sonic Kakusta pen cases, two eye-catching fountain pens, a wave of new inks, and a full spread of planners all landed at once. This roundup gathers twelve favorites with clear use cases, whether you journal, write letters, or simply enjoy good desk tools.

Midori Yuru Log Notebooks

More Yuru Log items from Midori are now available, including notebooks, stickers, and stamps. The notebooks incorporate illustrated elements to take the fear out of the blank page, and the corresponding stickers are repositionable. They blend into MD paper so seamlessly that they look like part of the page, which is a genuine boon if you cannot draw but still want the satisfaction of an adorable doodle in your journal. The stamps have pre-inked designs and are mounted on cork, so they feel nice in the hand.

Sonic Sheer Kakusta Pen Case

The Sheer Kakusta offers a minimalist look reminiscent of frosted glass. Its shape may seem odd at first, but when you unzip the top, it folds back to help the case stand upright on your desk. Magnets hold it in place, and the extra storage is a genuine game changer for keeping daily tools organized. Note that only the Sheer version includes the magnet.

Sonic Wide Kakusta Pen Case

The Wide Kakusta takes a different approach with a separate piece that holds small items like erasers and doubles as a holder for sticky notes or your phone. It skips the magnet of the Sheer model but adds more everyday practicality for anyone who carries more than just pens.

Stabilo Swing Cool Highlighters

These highlighters share the dryout resistance of the original Stabilo Boss, but in a slimmer form factor that fits more easily into a pen case. They even have clips for attaching to notebook covers. Hues span the muted NatureCOLORS line and the popular pastel range, so there is a shade for most note-taking styles.

Green Flash Daily Museum Letter Sets

Green Flash is a new brand to the lineup, and the Daily Museum Letter Sets, Memo Pads, and Sticky Notes feature famous artworks like Monet’s “Water Lilies” and van Gogh’s “Starry Night.” The letter paper includes lovely frame details that give correspondence an instant classy, museum-inspired vibe, which makes them a pleasure to write on even before the message gets going.

Maruman Mnemosyne Journal

Maruman is best known for the sleek, professional Mnemosyne Notebooks, though they can look a bit too corporate for some tastes. The Mnemosyne Journal softens that image. You can pick an A5 or A6 journal with ruled or dot grid sheet styles, and the 90 gsm paper is lovely to write on. It handles all kinds of writing instruments, including fountain pens.

Visconti Mirage Mythos Fountain Pen

The Mirage Mythos collection has expanded with two new additions: Demeter, the Greek goddess who rules over the harvest, and her daughter Persephone, queen of the underworld and goddess of spring. The caps and bodies are made with stunning acrylic resins, and magnets snap the pen together. It is a satisfying, secure closure that feels substantial in daily use.

Wearingeul Literary Inks

These inks take their inspiration from literary works such as “The Great Gatsby” and “Frankenstein.” The Glass Bead Game is one of the most unique inks to swatch, while Moby-Dick is a strong everyday candidate: its stormy blue looks almost gray in a fine nib and is very satisfying on cream paper. Literature fans will find a lot to explore here.

Diamine 160th Anniversary Inks

Diamine celebrates its 160th anniversary with a special ink lineup. Athol Violet pairs nicely with a Persephone-themed pen, and the range offers colors to match most writing moods. If you want a red-orange that is warm and legible, an option like Wearingeul Architecture Infinite Cube complements a Demeter pen well.

Dominant Industry Dip Pen Inks

More Dominant Industry Dip Pen Inks have arrived, some of which change color when exposed to sunlight. That color-shifting effect makes them especially fun for art and decorative writing. As a reminder, these inks are not meant to be used in fountain pens, so keep them to dip pens and brushes.

Kuretake Shimmer Mix-Ins

Kuretake’s mix-ins let you create custom colors for dip pens. The Shimmer Mix-Ins add fun sparkles, the Drop of Thinner and Drop of Shadow make inks lighter or darker respectively, and the Drop of Snow transforms inks into pastel hues. For anyone who enjoys experimenting with color, these are an easy and playful upgrade.

Iconic Washi Tape

Iconic is on a roll with memo tapes, sticky notes, and washi tape. The washi tapes have die-cut designs, the memo tape rolls are perforated and stick well without being too hard to remove, and the sticky notes highlight text or plans while still showing the writing underneath. Everything is well thought out for planners and journals alike.

Buying Advice

If you journal, start with the Midori Yuru Log line or the Maruman Mnemosyne Journal depending on whether you want guided illustration or blank pages. Pen case shoppers should choose between the magnet-equipped Sheer Kakusta and the more spacious Wide Kakusta. Ink lovers get the widest selection this month, from literary Wearingeul bottles to anniversary Diamine shades and color-shifting dip pen inks.

Conclusion

September delivered something for nearly every stationery taste: playful illustrated notebooks, cleverly engineered pen cases, museum-grade letter paper, and a colorful spread of inks and tapes. Pick the item that matches how you actually write, and it is hard to go wrong with this month’s releases.