Briefcase

📦 How to Make a Briefcase from Upcycled Cardboard – Functional & Elegant Stationery Organizer

Turn discarded cardboard into a sleek, functional briefcase that doubles as a portable stationery box. In this tutorial, I’ll show you how to make an elegant organizer that opens like a briefcase and stores your pens, notebooks, cards, and accessories—perfect for creators, students, or as a handmade gift.

🧰 Built entirely from recycled cardboard, this design uses precise cutting techniques, custom compartments, and an elastic strap system to keep everything tidy and secure.

Book-shaped Box

Upcycle cardboard into a book-shaped gift box with a seamless hinge. *This template isn’t included paper marche part as shown in the video.

Desk Organizer Drawer

A desk organizer using upcycled cardboard.
It’s the third drawer design I’ve shared—and this time, the drawer height itself becomes the sliding rail!

🎯 What’s special about this design?
• New rail structure: the drawer height doubles as the slide
• Shallow-depth drawers for better visibility and access
• Clean, minimal design you can personalize with color or decorations
• Compact and functional—perfect for creative workspaces

Miniature Drawer

🎯 Highlights of this Tutorial
1. Same structure as the full-size Desktop Drawer, scaled down to 37.5%
2. Handle attachment is hidden inside for a clean finish
3. Accurate mini version built with 1.5mm-thick cardboard

Geometric Pen Holders

Three unique pen holders using cardboard: a hexagonal prism, a cylindrical shape, and a simple square column.

Most of my previous designs were made with straight 90-degree angles, but this time we’re experimenting with curved and angled edges — a hexagon and a circle. Each design maximizes the unique properties of corrugated cardboard.

Lap Desk Tray

– A4 paper fits perfectly
– This is multi-purpose design. It can be a display, or lap desk, or paper tray.
– It features a gently curved front opening, designed for easy paper access and retrieval.

Paper Tray

– A4 paper fits perfectly
– This is a two-level tray with a sliding top tier and a stopper.
– It features a gently curved front opening, designed for easy paper access and retrieval.

Tool Box

A tool box from upcycled cardboard. The drawer pull has been designed to not get in the way when the box is closed. It’s shaped like a “truncated quadrangular prism” (a somewhat imposing name, we know), where the back of the drawer is the same height as the space, while the front is lower, allowing you to easily hook your finger in to pull it out. This is a brand-new design, so be sure to check it out!

Phone Stand

a phone stand from a single piece of cardboard and how to fold it into shape.

Bento Grid Organizer

Japanese lunch boxes called “Bento” are compartmentalized containers to separate different food types; lately, this idea was applied to UI design, called “Bento Grid”. I think this is a good idea to apply cardboard organizer too! Let’s make it!