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
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:
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.