USPS Flatrate Cardboard Castle

Introduction: USPS Flatrate Cardboard Castle

About: Maker/Inventor-thing [NYC x SF]

I was influenced by this video of creating chairs out of postal boxes

I'm part of a community organization called [freespace] that recently opened at the time and we need furniture so I ordered around 1000 flatrate boxes. hahaha

We had so many still left over after the "Postal Box Furniture Making and Pan Pizza Party" that I thought making a giant cardboard castle was a good.

I have a focus on modular structures. Here's how I did it.


These are the boxes you want:

Duct Tape - Lots of it

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Step 1: Make Your Boxes

Have your friends help make boxes while you contemplate this endeavor you're about to take on.

*Lala posin' with the mountain of boxes

Step 2: Line Up the Boxes and Start Taping

Set the overlay.

Over lap 1/4 jutting out to create a modular puzzle like fit!

I made mine 10 boxes across and 5 boxes in height

split into 9 pieces:

3 walls

4 corners

2 entrance pieces

Step 3: Keep Workin'

Takes a long time so get friends that have some maker skills to help!

There will be a side where there is a gap due to the way the overlaps are made.

-Consider them windows :)

Step 4: Yay!

Once it's complete, you can disassemble them and rearrange them into whatever you want.

I found them to work very well as a wall partition as well.

Step 5: Put It Out on the Street!

Put a carpet in it.

Add some chairs.

Place a table.

Maybe even a guitar,

Then Invite foreigners/strangers/friends family,

and BAM you got a great place to chill :)

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    6 Discussions


    5 years ago

    Hey check this out:


    5 years ago on Introduction

    So this is why the postal rates keep going up. This misuse of resources is a great example of the tragedy of the commons. Next time you "need" a cardboard castle, maybe you can upcycle some used boxes rather than having some brand new manufactured boxes hand delivered to you on someone else's dime.


    5 years ago on Introduction

    Yeah, just wanted to let you know that it is a violation of federal law to misuse those boxes. I would probably avoid flaunting it around by having a box castle outside of my venue. USPS has pursued people for less. Also, I vaguely remember reading years ago that someone who built a chair out of them and posted it online got into trouble. Maybe my memory is failing me though.

    I have one of these boxes in my hand and it reads, "This packaging is the property of U.S. Postal Service and is provided solely for use in sending Priority Mail shipments. Misuse may be a violation of federal law. This packaging isnot for resale."

    "we need furniture so I ordered around 1000 flatrate boxes." seems to be in violation.