I recently joined Good. Because it's cool. And there I discovered that the largest recycled structure ever made was made of milk cartons - 45,000 of them (see pic below). Collected from approx 100 colleges (article here). This got me wondering about repurposing milk and juice cartons because, like soda cans and beer bottles, they pile up around us. First, let me say this: Cartons CAN BE RECYCLED in many parts of the US (check your local programs). Perhaps you already knew this. I wasn't sure, so I checked. And apparently, like me, a lot of people assume they are not recyclable. We're wrong. 

However, you can also make some pretty cool stuff out of these very common packages. So here's some inspiration: