Meet the Shachihata Kezuri Cap — a nifty little pencil sharpener from Japan that doubles as a bottle cap!

Just screw it onto any standard PET plastic bottle (like a soda or water bottle) and you've got an instant portable sharpener for wood pencils.

It's super compact, fun to use, and comes in this bright yellow color.

Shachihata is a well-known Japanese stationery brand, so you're getting good quality in a tiny package.

Great for students, artists, teachers, or anyone who likes clever desk gadgets.

Since it attaches to a bottle, it's easy to carry in a bag without making a mess, and the shavings collect inside the bottle for easy cleanup.

Model number is ZKC-A4/H, and it comes in a small package measuring about 13 x 3.7 x 6 cm.

Whether you're at school, the office, or on the go, this sharpener cap is a practical and quirky addition to your supplies.

Simple, functional, and totally portable — just twist it on and sharpen away!