The kind with the corrugated roof, you know.

Global Cardboard Challenge.

So this is a corrugated box and its shadow.

Like paper, paper and cardboard.

Everything came in plastic, in cardboard.

So The hut was made of corrugated metal, set on a concrete pad.

Prepare five postcard sized pieces of cardboard.

What's interesting is we still use cardboard boxes.

Not the cardboard box, but the green screen.

And that little program's on that cardboard disk.

They're lining up to play at his cardboard arcade.

There's a Cardboard Amazement Park being planned in Kampala.

You scoop it up. You put it in cardboard boxes.

They're picking up a giant floppy disk made of cardboard.

We even made flooring, walls and everything, out of cardboard.

Or if they were dark cells, it was like iron corrugated, and he would put his fingers through.

Who had taken over his dad's store with this elaborate cardboard arcade.

This is a cardboard model, a little bit smaller than the hyena.

You all have a piece of cardboard and a piece of paper.

No matter how old you are, all you need is cardboard and imagination.

Now the really clever bit is what they did with the cardboard waste.

Outside the school, she saw people with no homes living in cardboard boxes.

They used to use cardboard boxes years ago and we still use them.

I told Caine that when I was a kid, I also built cardboard rockets.

Childhood imagination will take you from cardboard to this in just a few years.

They then shredded the cardboard and sold it to equestrian centers as horse bedding.

So they're cutting out the little pieces of cardboard here and pasting them up.

And one of my favorites is called the Cardboard to Caviar Project by Graham Wiles.

The town of some 19,000 people consists of wooden houses ringed by bamboo fencing, corrugated iron roofs transformed by rust into varying tawny shades.

When you're a lonely nine year old boy an empty cardboard box can be a universe of possibility.

But for me, the most inspiring thing was the wave of cardboard creativity inspired in kids around the world.

This family, Sarita and her husband, bought a 15 dollar unit when they were living in a literally a three walled lean to with a corrugated iron roof.

I want to reinvent the delivery system, and the use of cardboard around the world, so they become ecological footprints.

Likewise, with the aforementioned quantity of corrugated bars, in 10 years the country could completely repair the 200,000 dwellings currently in need of repair throughout Havana, benefiting 180,000 people.

She does this with cardboard, but since I have an expensive computer here I'll just rotate this little guy around and ...

And I realized when I'd come into the meetings with these corrugated metal and chain link stuff, and people would just look at me like I'd just landed from Mars.

And in their area they had a lot of shops and restaurants that were producing lots of food, cardboard and plastic waste.

And then you put tree seeds in here, and then you end up growing potentially an old growth forest from a cardboard box.

You have a cardboard box with a mirror in the middle, and then you put the phantom so my first patient, Derek, came in.

He wanted us instead to use these cheap cardboard viewers so that there was no chance at all that our eyes would be damaged.

You could take a cardboard box delivering shoes, you could add water I developed this for the refugee community corns, beans and squash and onions.

I literally drew on the walls of the trailer, mocked it up in cardboard, we'd come in and cut, decide things were wrong, pull it out, put it back in.

This was burned out during the riots this is next to my building and so I had another cardboard box built and I walked back out in the streets again.

An NYU researcher here took little cardboard robots with smiley faces on them, and a motor that just drove them forward and a flag sticking out the back with a desired destination.

Located just a couple of miles from downtown Nairobi, Kibera is a heavily polluted, densely populated settlement composed of informal roads and shacks with corrugated tin roofs. Kenya s government does not recognize Kibera, there is no sewage system or formal power grid.