I designed a robust chair, it survived many a party (unlike most fragile chairs I've seen) and the principle could be applied to any household furniture.
I've included a step by step of how the basic structure goes together (along with an IKEA type instruction book).
But the best bit is the video of me putting together a whole chair.
Step 1: Basic Structure
The first layer will need 3 strips of card, one longer piece to create the zig-zag and two 'sandwich pieces'
Mark out and score your longest piece at 42mm intervals on each side, make sure to stagger the lines so that when scored it will fold up properly (fig.2)
Take one of your other pieces and mark out and glue it (fig.3)
Now carefully glue down the zig-zag piece, you may need to use pins or tape to hold it while it dries.
After about 10 minutes you can glue the second sandwich piece on top.
Use something heavy to weigh it down and make sure it all sticks. (fig.4)
You can continue to add as many layers as you need (fig.5)
you can make this stuff in big sheets and cut it to the right size later, or you can cut out the shapes you want and build them up layer by layer. (like i did)